[v12, 0/8] Fix eSDHC host version register bug

[v12, 0/8] Fix eSDHC host version register bug

[Yangbo Lu]

This patchset is used to fix a host version register bug in the T4240-R1.0-R2.0
eSDHC controller. To match the SoC version and revision, 10 previous version
patchsets had tried many methods but all of them were rejected by reviewers.
Such as
	- dts compatible method
	- syscon method
	- ifdef PPC method
	- GUTS driver getting SVR method
Anrd suggested a soc_device_match method in v10, and this is the only available
method left now. This v11 patchset introduces the soc_device_match interface in
soc driver.

The first six patches of Yangbo are to add the GUTS driver. This is used to
register a soc device which contain soc version and revision information.
The other two patches introduce the soc_device_match method in soc driver
and apply it on esdhc driver to fix this bug.

Arnd Bergmann (1):
  base: soc: introduce soc_device_match() interface

Yangbo Lu (7):
  dt: bindings: update Freescale DCFG compatible
  ARM64: dts: ls2080a: add device configuration node
  dt: bindings: move guts devicetree doc out of powerpc directory
  powerpc/fsl: move mpc85xx.h to include/linux/fsl
  soc: fsl: add GUTS driver for QorIQ platforms
  MAINTAINERS: add entry for Freescale SoC drivers
  mmc: sdhci-of-esdhc: fix host version for T4240-R1.0-R2.0

 Documentation/devicetree/bindings/arm/fsl.txt      |   6 +-
 .../bindings/{powerpc => soc}/fsl/guts.txt         |   3 +
 MAINTAINERS                                        |  11 +-
 arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi     |   6 +
 arch/powerpc/kernel/cpu_setup_fsl_booke.S          |   2 +-
 arch/powerpc/sysdev/fsl_pci.c                      |   2 +-
 drivers/base/Kconfig                               |   1 +
 drivers/base/soc.c                                 |  66 ++++++
 drivers/clk/clk-qoriq.c                            |   3 +-
 drivers/i2c/busses/i2c-mpc.c                       |   2 +-
 drivers/iommu/fsl_pamu.c                           |   3 +-
 drivers/mmc/host/Kconfig                           |   1 +
 drivers/mmc/host/sdhci-of-esdhc.c                  |  20 ++
 drivers/net/ethernet/freescale/gianfar.c           |   2 +-
 drivers/soc/Kconfig                                |   2 +-
 drivers/soc/fsl/Kconfig                            |  19 ++
 drivers/soc/fsl/Makefile                           |   1 +
 drivers/soc/fsl/guts.c                             | 257 +++++++++++++++++++++
 include/linux/fsl/guts.h                           | 125 ++++++----
 .../asm/mpc85xx.h => include/linux/fsl/svr.h       |   4 +-
 include/linux/sys_soc.h                            |   3 +
 21 files changed, 478 insertions(+), 61 deletions(-)
 rename Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt (91%)
 create mode 100644 drivers/soc/fsl/Kconfig
 create mode 100644 drivers/soc/fsl/guts.c
 rename arch/powerpc/include/asm/mpc85xx.h => include/linux/fsl/svr.h (97%)

-- 
2.1.0.27.g96db324

[v12, 1/8] dt: bindings: update Freescale DCFG compatible

[Yangbo Lu]

Update Freescale DCFG compatible with 'fsl,<chip>-dcfg' instead
of 'fsl,ls1021a-dcfg' to include more chips such as ls1021a,
ls1043a, and ls2080a.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Scott Wood <oss@buserror.net>
---
Changes for v8:
	- Added this patch
Changes for v9:
	- Added a list for the possible compatibles
Changes for v10:
	- None
Changes for v11:
	- Added 'Acked-by: Rob Herring'
	- Updated commit message by Scott
Changes for v12:
	- None
---
 Documentation/devicetree/bindings/arm/fsl.txt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/arm/fsl.txt b/Documentation/devicetree/bindings/arm/fsl.txt
index dbbc095..713c1ae 100644
--- a/Documentation/devicetree/bindings/arm/fsl.txt
+++ b/Documentation/devicetree/bindings/arm/fsl.txt
@@ -119,7 +119,11 @@ Freescale DCFG
 configuration and status for the device. Such as setting the secondary
 core start address and release the secondary core from holdoff and startup.
   Required properties:
-  - compatible: should be "fsl,ls1021a-dcfg"
+  - compatible: should be "fsl,<chip>-dcfg"
+    Possible compatibles:
+	"fsl,ls1021a-dcfg"
+	"fsl,ls1043a-dcfg"
+	"fsl,ls2080a-dcfg"
   - reg : should contain base address and length of DCFG memory-mapped registers
 
 Example:
-- 
2.1.0.27.g96db324

[v12, 2/8] ARM64: dts: ls2080a: add device configuration node

[Yangbo Lu]

Add the dts node for device configuration unit that provides
general purpose configuration and status for the device.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Scott Wood <oss@buserror.net>
---
Changes for v5:
	- Added this patch
Changes for v6:
	- None
Changes for v7:
	- None
Changes for v8:
	- Added 'Acked-by: Scott Wood'
Changes for v9:
	- None
Changes for v10:
	- None
Changes for v11:
	- None
Changes for v12:
	- None
---
 arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi
index e3b6034..f231a14 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi
@@ -215,6 +215,12 @@
 			clocks = <&sysclk>;
 		};
 
+		dcfg: dcfg@1e00000 {
+			compatible = "fsl,ls2080a-dcfg", "syscon";
+			reg = <0x0 0x1e00000 0x0 0x10000>;
+			little-endian;
+		};
+
 		serial0: serial@21c0500 {
 			compatible = "fsl,ns16550", "ns16550a";
 			reg = <0x0 0x21c0500 0x0 0x100>;
-- 
2.1.0.27.g96db324

[v12, 3/8] dt: bindings: move guts devicetree doc out of powerpc directory

[Yangbo Lu]

Move guts devicetree doc to Documentation/devicetree/bindings/soc/fsl/
since it's used by not only PowerPC but also ARM. And add a specification
for 'little-endian' property.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Scott Wood <oss@buserror.net>
---
Changes for v4:
	- Added this patch
Changes for v5:
	- Modified the description for little-endian property
Changes for v6:
	- None
Changes for v7:
	- None
Changes for v8:
	- Added 'Acked-by: Scott Wood'
	- Added 'Acked-by: Rob Herring'
Changes for v9:
	- None
Changes for v10:
	- None
Changes for v11:
	- None
Changes for v12:
	- None
---
 Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt | 3 +++
 1 file changed, 3 insertions(+)
 rename Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt (91%)

diff --git a/Documentation/devicetree/bindings/powerpc/fsl/guts.txt b/Documentation/devicetree/bindings/soc/fsl/guts.txt
similarity index 91%
rename from Documentation/devicetree/bindings/powerpc/fsl/guts.txt
rename to Documentation/devicetree/bindings/soc/fsl/guts.txt
index b71b203..07adca9 100644
--- a/Documentation/devicetree/bindings/powerpc/fsl/guts.txt
+++ b/Documentation/devicetree/bindings/soc/fsl/guts.txt
@@ -25,6 +25,9 @@ Recommended properties:
  - fsl,liodn-bits : Indicates the number of defined bits in the LIODN
    registers, for those SOCs that have a PAMU device.
 
+ - little-endian : Indicates that the global utilities block is little
+   endian. The default is big endian.
+
 Examples:
 	global-utilities@e0000 {	/* global utilities block */
 		compatible = "fsl,mpc8548-guts";
-- 
2.1.0.27.g96db324

[v12, 4/8] powerpc/fsl: move mpc85xx.h to include/linux/fsl

[Yangbo Lu]

Move mpc85xx.h to include/linux/fsl and rename it to svr.h as a common
header file.  This SVR numberspace is used on some ARM chips as well as
PPC, and even to check for a PPC SVR multi-arch drivers would otherwise
need to ifdef the header inclusion and all references to the SVR symbols.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Joerg Roedel <jroedel@suse.de>
[scottwood: update description]
Signed-off-by: Scott Wood <oss@buserror.net>
---
Changes for v2:
	- None
Changes for v3:
	- None
Changes for v4:
	- None
Changes for v5:
	- Changed to Move mpc85xx.h to include/linux/fsl/
	- Adjusted '#include <linux/fsl/svr.h>' position in file
Changes for v6:
	- None
Changes for v7:
	- Added 'Acked-by: Wolfram Sang' for I2C part
	- Also applied to arch/powerpc/kernel/cpu_setup_fsl_booke.S
Changes for v8:
	- Added 'Acked-by: Stephen Boyd' for clk part
	- Added 'Acked-by: Scott Wood'
	- Added 'Acked-by: Joerg Roedel' for iommu part
Changes for v9:
	- None
Changes for v10:
	- None
Changes for v11:
	- Updated description by Scott
Changes for v12:
	- None
---
 arch/powerpc/kernel/cpu_setup_fsl_booke.S                     | 2 +-
 arch/powerpc/sysdev/fsl_pci.c                                 | 2 +-
 drivers/clk/clk-qoriq.c                                       | 3 +--
 drivers/i2c/busses/i2c-mpc.c                                  | 2 +-
 drivers/iommu/fsl_pamu.c                                      | 3 +--
 drivers/net/ethernet/freescale/gianfar.c                      | 2 +-
 arch/powerpc/include/asm/mpc85xx.h => include/linux/fsl/svr.h | 4 ++--
 7 files changed, 8 insertions(+), 10 deletions(-)
 rename arch/powerpc/include/asm/mpc85xx.h => include/linux/fsl/svr.h (97%)

diff --git a/arch/powerpc/kernel/cpu_setup_fsl_booke.S b/arch/powerpc/kernel/cpu_setup_fsl_booke.S
index 462aed9..2b0284e 100644
--- a/arch/powerpc/kernel/cpu_setup_fsl_booke.S
+++ b/arch/powerpc/kernel/cpu_setup_fsl_booke.S
@@ -13,13 +13,13 @@
  *
  */
 
+#include <linux/fsl/svr.h>
 #include <asm/page.h>
 #include <asm/processor.h>
 #include <asm/cputable.h>
 #include <asm/ppc_asm.h>
 #include <asm/mmu-book3e.h>
 #include <asm/asm-offsets.h>
-#include <asm/mpc85xx.h>
 
 _GLOBAL(__e500_icache_setup)
 	mfspr	r0, SPRN_L1CSR1
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index 0ef9df4..0fd1895 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -22,6 +22,7 @@
 #include <linux/delay.h>
 #include <linux/string.h>
 #include <linux/fsl/edac.h>
+#include <linux/fsl/svr.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/memblock.h>
@@ -37,7 +38,6 @@
 #include <asm/pci-bridge.h>
 #include <asm/ppc-pci.h>
 #include <asm/machdep.h>
-#include <asm/mpc85xx.h>
 #include <asm/disassemble.h>
 #include <asm/ppc-opcode.h>
 #include <sysdev/fsl_soc.h>
diff --git a/drivers/clk/clk-qoriq.c b/drivers/clk/clk-qoriq.c
index 58566a17..4b6c438 100644
--- a/drivers/clk/clk-qoriq.c
+++ b/drivers/clk/clk-qoriq.c
@@ -13,6 +13,7 @@
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/fsl/guts.h>
+#include <linux/fsl/svr.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -1149,8 +1150,6 @@ bad_args:
 }
 
 #ifdef CONFIG_PPC
-#include <asm/mpc85xx.h>
-
 static const u32 a4510_svrs[] __initconst = {
 	(SVR_P2040 << 8) | 0x10,	/* P2040 1.0 */
 	(SVR_P2040 << 8) | 0x11,	/* P2040 1.1 */
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index 48ecffe..600704c 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -27,9 +27,9 @@
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
+#include <linux/fsl/svr.h>
 
 #include <asm/mpc52xx.h>
-#include <asm/mpc85xx.h>
 #include <sysdev/fsl_soc.h>
 
 #define DRV_NAME "mpc-i2c"
diff --git a/drivers/iommu/fsl_pamu.c b/drivers/iommu/fsl_pamu.c
index a34355f..af8fb27 100644
--- a/drivers/iommu/fsl_pamu.c
+++ b/drivers/iommu/fsl_pamu.c
@@ -21,11 +21,10 @@
 #include "fsl_pamu.h"
 
 #include <linux/fsl/guts.h>
+#include <linux/fsl/svr.h>
 #include <linux/interrupt.h>
 #include <linux/genalloc.h>
 
-#include <asm/mpc85xx.h>
-
 /* define indexes for each operation mapping scenario */
 #define OMI_QMAN        0x00
 #define OMI_FMAN        0x01
diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 4b4f5bc..55be5ce 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -86,11 +86,11 @@
 #include <linux/udp.h>
 #include <linux/in.h>
 #include <linux/net_tstamp.h>
+#include <linux/fsl/svr.h>
 
 #include <asm/io.h>
 #ifdef CONFIG_PPC
 #include <asm/reg.h>
-#include <asm/mpc85xx.h>
 #endif
 #include <asm/irq.h>
 #include <asm/uaccess.h>
diff --git a/arch/powerpc/include/asm/mpc85xx.h b/include/linux/fsl/svr.h
similarity index 97%
rename from arch/powerpc/include/asm/mpc85xx.h
rename to include/linux/fsl/svr.h
index 213f3a8..8d13836 100644
--- a/arch/powerpc/include/asm/mpc85xx.h
+++ b/include/linux/fsl/svr.h
@@ -9,8 +9,8 @@
  * (at your option) any later version.
  */
 
-#ifndef __ASM_PPC_MPC85XX_H
-#define __ASM_PPC_MPC85XX_H
+#ifndef FSL_SVR_H
+#define FSL_SVR_H
 
 #define SVR_REV(svr)	((svr) & 0xFF)		/* SOC design resision */
 #define SVR_MAJ(svr)	(((svr) >>  4) & 0xF)	/* Major revision field*/
-- 
2.1.0.27.g96db324

[v12, 5/8] soc: fsl: add GUTS driver for QorIQ platforms

[Yangbo Lu]

The global utilities block controls power management, I/O device
enabling, power-onreset(POR) configuration monitoring, alternate
function selection for multiplexed signals,and clock control.

This patch adds a driver to manage and access global utilities block.
Initially only reading SVR and registering soc device are supported.
Other guts accesses, such as reading RCW, should eventually be moved
into this driver as well.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v4:
	- Added this patch
Changes for v5:
	- Modified copyright info
	- Changed MODULE_LICENSE to GPL
	- Changed EXPORT_SYMBOL_GPL to EXPORT_SYMBOL
	- Made FSL_GUTS user-invisible
	- Added a complete compatible list for GUTS
	- Stored guts info in file-scope variable
	- Added mfspr() getting SVR
	- Redefined GUTS APIs
	- Called fsl_guts_init rather than using platform driver
	- Removed useless parentheses
	- Removed useless 'extern' key words
Changes for v6:
	- Made guts thread safe in fsl_guts_init
Changes for v7:
	- Removed 'ifdef' for function declaration in guts.h
Changes for v8:
	- Fixes lines longer than 80 characters checkpatch issue
	- Added 'Acked-by: Scott Wood'
Changes for v9:
	- None
Changes for v10:
	- None
Changes for v11:
	- Changed to platform driver
Changes for v12:
	- Removed "signed-off-by: Scott"
	- Defined fsl_soc_die_attr struct array instead of
	  soc_device_attribute
	- Re-designed soc_device_attribute for QorIQ SoC
	- Other minor fixes
---
 drivers/soc/Kconfig      |   2 +-
 drivers/soc/fsl/Kconfig  |  19 ++++
 drivers/soc/fsl/Makefile |   1 +
 drivers/soc/fsl/guts.c   | 257 +++++++++++++++++++++++++++++++++++++++++++++++
 include/linux/fsl/guts.h | 125 ++++++++++++++---------
 5 files changed, 355 insertions(+), 49 deletions(-)
 create mode 100644 drivers/soc/fsl/Kconfig
 create mode 100644 drivers/soc/fsl/guts.c

diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig
index fe42a2f..f31bceb 100644
--- a/drivers/soc/Kconfig
+++ b/drivers/soc/Kconfig
@@ -1,7 +1,7 @@
 menu "SOC (System On Chip) specific Drivers"
 
 source "drivers/soc/bcm/Kconfig"
-source "drivers/soc/fsl/qe/Kconfig"
+source "drivers/soc/fsl/Kconfig"
 source "drivers/soc/mediatek/Kconfig"
 source "drivers/soc/qcom/Kconfig"
 source "drivers/soc/rockchip/Kconfig"
diff --git a/drivers/soc/fsl/Kconfig b/drivers/soc/fsl/Kconfig
new file mode 100644
index 0000000..b99764c
--- /dev/null
+++ b/drivers/soc/fsl/Kconfig
@@ -0,0 +1,19 @@
+#
+# Freescale SOC drivers
+#
+
+source "drivers/soc/fsl/qe/Kconfig"
+
+config FSL_GUTS
+	bool "Freescale QorIQ GUTS driver"
+	select SOC_BUS
+	help
+	  The global utilities block controls power management, I/O device
+	  enabling, power-onreset(POR) configuration monitoring, alternate
+	  function selection for multiplexed signals,and clock control.
+	  This driver is to manage and access global utilities block.
+	  Initially only reading SVR and registering soc device are supported.
+	  Other guts accesses, such as reading RCW, should eventually be moved
+	  into this driver as well.
+
+	  If you want GUTS driver support, you should say Y here.
diff --git a/drivers/soc/fsl/Makefile b/drivers/soc/fsl/Makefile
index 203307f..02afb7f 100644
--- a/drivers/soc/fsl/Makefile
+++ b/drivers/soc/fsl/Makefile
@@ -4,3 +4,4 @@
 
 obj-$(CONFIG_QUICC_ENGINE)		+= qe/
 obj-$(CONFIG_CPM)			+= qe/
+obj-$(CONFIG_FSL_GUTS)			+= guts.o
diff --git a/drivers/soc/fsl/guts.c b/drivers/soc/fsl/guts.c
new file mode 100644
index 0000000..2a0e52c
--- /dev/null
+++ b/drivers/soc/fsl/guts.c
@@ -0,0 +1,257 @@
+/*
+ * Freescale QorIQ Platforms GUTS Driver
+ *
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/of_fdt.h>
+#include <linux/sys_soc.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/fsl/guts.h>
+#include <linux/fsl/svr.h>
+
+struct guts {
+	struct ccsr_guts __iomem *regs;
+	bool little_endian;
+};
+
+struct fsl_soc_die_attr {
+	char	*die;
+	u32	svr;
+	u32	mask;
+};
+
+static struct guts *guts;
+static struct soc_device_attribute soc_dev_attr;
+static struct soc_device *soc_dev;
+
+
+/* SoC die attribute definition for QorIQ platform */
+static const struct fsl_soc_die_attr fsl_soc_die[] = {
+#ifdef CONFIG_PPC
+	/*
+	 * Power Architecture-based SoCs T Series
+	 */
+
+	/* Die: T4240, SoC: T4240/T4160/T4080 */
+	{ .die		= "T4240",
+	  .svr		= 0x82400000,
+	  .mask		= 0xfff00000,
+	},
+	/* Die: T1040, SoC: T1040/T1020/T1042/T1022 */
+	{ .die		= "T1040",
+	  .svr		= 0x85200000,
+	  .mask		= 0xfff00000,
+	},
+	/* Die: T2080, SoC: T2080/T2081 */
+	{ .die		= "T2080",
+	  .svr		= 0x85300000,
+	  .mask		= 0xfff00000,
+	},
+	/* Die: T1024, SoC: T1024/T1014/T1023/T1013 */
+	{ .die		= "T1024",
+	  .svr		= 0x85400000,
+	  .mask		= 0xfff00000,
+	},
+#endif /* CONFIG_PPC */
+#if defined(CONFIG_ARCH_MXC) || defined(CONFIG_ARCH_LAYERSCAPE)
+	/*
+	 * ARM-based SoCs LS Series
+	 */
+
+	/* Die: LS1043A, SoC: LS1043A/LS1023A */
+	{ .die		= "LS1043A",
+	  .svr		= 0x87920000,
+	  .mask		= 0xffff0000,
+	},
+	/* Die: LS2080A, SoC: LS2080A/LS2040A/LS2085A */
+	{ .die		= "LS2080A",
+	  .svr		= 0x87010000,
+	  .mask		= 0xff3f0000,
+	},
+	/* Die: LS1088A, SoC: LS1088A/LS1048A/LS1084A/LS1044A */
+	{ .die		= "LS1088A",
+	  .svr		= 0x87030000,
+	  .mask		= 0xff3f0000,
+	},
+	/* Die: LS1012A, SoC: LS1012A */
+	{ .die		= "LS1012A",
+	  .svr		= 0x87040000,
+	  .mask		= 0xffff0000,
+	},
+	/* Die: LS1046A, SoC: LS1046A/LS1026A */
+	{ .die		= "LS1046A",
+	  .svr		= 0x87070000,
+	  .mask		= 0xffff0000,
+	},
+	/* Die: LS2088A, SoC: LS2088A/LS2048A/LS2084A/LS2044A */
+	{ .die		= "LS2088A",
+	  .svr		= 0x87090000,
+	  .mask		= 0xff3f0000,
+	},
+	/* Die: LS1021A, SoC: LS1021A/LS1020A/LS1022A
+	 * Note: Put this die at the end in cause of incorrect identification
+	 */
+	{ .die		= "LS1021A",
+	  .svr		= 0x87000000,
+	  .mask		= 0xfff00000,
+	},
+#endif /* CONFIG_ARCH_MXC || CONFIG_ARCH_LAYERSCAPE */
+	{ },
+};
+
+static const struct fsl_soc_die_attr *fsl_soc_die_match(
+	u32 svr, const struct fsl_soc_die_attr *matches)
+{
+	while (matches->svr) {
+		if (matches->svr == (svr & matches->mask))
+			return matches;
+		matches++;
+	};
+	return NULL;
+}
+
+u32 fsl_guts_get_svr(void)
+{
+	u32 svr = 0;
+
+	if (!guts || !guts->regs)
+		return svr;
+
+	if (guts->little_endian)
+		svr = ioread32(&guts->regs->svr);
+	else
+		svr = ioread32be(&guts->regs->svr);
+
+	return svr;
+}
+EXPORT_SYMBOL(fsl_guts_get_svr);
+
+static int fsl_guts_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	const struct fsl_soc_die_attr *soc_die;
+	const char *machine;
+	u32 svr;
+	int ret = 0;
+
+	/* Initialize guts */
+	guts = kzalloc(sizeof(*guts), GFP_KERNEL);
+	if (!guts)
+		return -ENOMEM;
+
+	guts->little_endian = of_property_read_bool(np, "little-endian");
+
+	guts->regs = of_iomap(np, 0);
+	if (!guts->regs) {
+		ret = -ENOMEM;
+		goto out_free;
+	}
+
+	/* Register soc device */
+	machine = of_flat_dt_get_machine_name();
+	if (machine)
+		soc_dev_attr.machine = kstrdup(machine, GFP_KERNEL);
+
+	svr = fsl_guts_get_svr();
+	soc_die = fsl_soc_die_match(svr, fsl_soc_die);
+	if (soc_die) {
+		soc_dev_attr.family = kasprintf(GFP_KERNEL, "QorIQ %s",
+						soc_die->die);
+	} else {
+		soc_dev_attr.family = kasprintf(GFP_KERNEL, "QorIQ");
+	}
+	soc_dev_attr.soc_id = kasprintf(GFP_KERNEL, "svr:0x%08x", svr);
+	soc_dev_attr.revision = kasprintf(GFP_KERNEL, "%d.%d",
+					   SVR_MAJ(svr), SVR_MIN(svr));
+
+	soc_dev = soc_device_register(&soc_dev_attr);
+	if (IS_ERR(soc_dev)) {
+		ret = PTR_ERR(soc_dev);
+		goto out;
+	}
+	pr_info("Machine: %s\n", soc_dev_attr.machine);
+	pr_info("SoC family: %s\n", soc_dev_attr.family);
+	pr_info("SoC ID: %s, Revision: %s\n",
+		soc_dev_attr.soc_id, soc_dev_attr.revision);
+	return 0;
+out:
+	kfree(soc_dev_attr.machine);
+	kfree(soc_dev_attr.family);
+	kfree(soc_dev_attr.soc_id);
+	kfree(soc_dev_attr.revision);
+	iounmap(guts->regs);
+out_free:
+	kfree(guts);
+	return ret;
+}
+
+static int fsl_guts_remove(struct platform_device *dev)
+{
+	soc_device_unregister(soc_dev);
+	kfree(soc_dev_attr.machine);
+	kfree(soc_dev_attr.family);
+	kfree(soc_dev_attr.soc_id);
+	kfree(soc_dev_attr.revision);
+	iounmap(guts->regs);
+	kfree(guts);
+	return 0;
+}
+
+/*
+ * Table for matching compatible strings, for device tree
+ * guts node, for Freescale QorIQ SOCs.
+ */
+static const struct of_device_id fsl_guts_of_match[] = {
+	{ .compatible = "fsl,qoriq-device-config-1.0", },
+	{ .compatible = "fsl,qoriq-device-config-2.0", },
+	{ .compatible = "fsl,p1010-guts", },
+	{ .compatible = "fsl,p1020-guts", },
+	{ .compatible = "fsl,p1021-guts", },
+	{ .compatible = "fsl,p1022-guts", },
+	{ .compatible = "fsl,p1023-guts", },
+	{ .compatible = "fsl,p2020-guts", },
+	{ .compatible = "fsl,bsc9131-guts", },
+	{ .compatible = "fsl,bsc9132-guts", },
+	{ .compatible = "fsl,mpc8536-guts", },
+	{ .compatible = "fsl,mpc8544-guts", },
+	{ .compatible = "fsl,mpc8548-guts", },
+	{ .compatible = "fsl,mpc8568-guts", },
+	{ .compatible = "fsl,mpc8569-guts", },
+	{ .compatible = "fsl,mpc8572-guts", },
+	{ .compatible = "fsl,ls1021a-dcfg", },
+	{ .compatible = "fsl,ls1043a-dcfg", },
+	{ .compatible = "fsl,ls2080a-dcfg", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, fsl_guts_of_match);
+
+static struct platform_driver fsl_guts_driver = {
+	.driver = {
+		.name = "fsl-guts",
+		.of_match_table = fsl_guts_of_match,
+	},
+	.probe = fsl_guts_probe,
+	.remove = fsl_guts_remove,
+};
+
+static int __init fsl_guts_init(void)
+{
+	return platform_driver_register(&fsl_guts_driver);
+}
+core_initcall(fsl_guts_init);
+
+static void __exit fsl_guts_exit(void)
+{
+	platform_driver_unregister(&fsl_guts_driver);
+}
+module_exit(fsl_guts_exit);
diff --git a/include/linux/fsl/guts.h b/include/linux/fsl/guts.h
index 649e917..3efa3b8 100644
--- a/include/linux/fsl/guts.h
+++ b/include/linux/fsl/guts.h
@@ -29,83 +29,112 @@
  * #ifdefs.
  */
 struct ccsr_guts {
-	__be32	porpllsr;	/* 0x.0000 - POR PLL Ratio Status Register */
-	__be32	porbmsr;	/* 0x.0004 - POR Boot Mode Status Register */
-	__be32	porimpscr;	/* 0x.0008 - POR I/O Impedance Status and Control Register */
-	__be32	pordevsr;	/* 0x.000c - POR I/O Device Status Register */
-	__be32	pordbgmsr;	/* 0x.0010 - POR Debug Mode Status Register */
-	__be32	pordevsr2;	/* 0x.0014 - POR device status register 2 */
+	u32	porpllsr;	/* 0x.0000 - POR PLL Ratio Status Register */
+	u32	porbmsr;	/* 0x.0004 - POR Boot Mode Status Register */
+	u32	porimpscr;	/* 0x.0008 - POR I/O Impedance Status and
+				 *           Control Register
+				 */
+	u32	pordevsr;	/* 0x.000c - POR I/O Device Status Register */
+	u32	pordbgmsr;	/* 0x.0010 - POR Debug Mode Status Register */
+	u32	pordevsr2;	/* 0x.0014 - POR device status register 2 */
 	u8	res018[0x20 - 0x18];
-	__be32	porcir;		/* 0x.0020 - POR Configuration Information Register */
+	u32	porcir;		/* 0x.0020 - POR Configuration Information
+				 *           Register
+				 */
 	u8	res024[0x30 - 0x24];
-	__be32	gpiocr;		/* 0x.0030 - GPIO Control Register */
+	u32	gpiocr;		/* 0x.0030 - GPIO Control Register */
 	u8	res034[0x40 - 0x34];
-	__be32	gpoutdr;	/* 0x.0040 - General-Purpose Output Data Register */
+	u32	gpoutdr;	/* 0x.0040 - General-Purpose Output Data
+				 *           Register
+				 */
 	u8	res044[0x50 - 0x44];
-	__be32	gpindr;		/* 0x.0050 - General-Purpose Input Data Register */
+	u32	gpindr;		/* 0x.0050 - General-Purpose Input Data
+				 *           Register
+				 */
 	u8	res054[0x60 - 0x54];
-	__be32	pmuxcr;		/* 0x.0060 - Alternate Function Signal Multiplex Control */
-        __be32  pmuxcr2;	/* 0x.0064 - Alternate function signal multiplex control 2 */
-        __be32  dmuxcr;		/* 0x.0068 - DMA Mux Control Register */
+	u32	pmuxcr;		/* 0x.0060 - Alternate Function Signal
+				 *           Multiplex Control
+				 */
+	u32	pmuxcr2;	/* 0x.0064 - Alternate function signal
+				 *           multiplex control 2
+				 */
+	u32	dmuxcr;		/* 0x.0068 - DMA Mux Control Register */
         u8	res06c[0x70 - 0x6c];
-	__be32	devdisr;	/* 0x.0070 - Device Disable Control */
+	u32	devdisr;	/* 0x.0070 - Device Disable Control */
 #define CCSR_GUTS_DEVDISR_TB1	0x00001000
 #define CCSR_GUTS_DEVDISR_TB0	0x00004000
-	__be32	devdisr2;	/* 0x.0074 - Device Disable Control 2 */
+	u32	devdisr2;	/* 0x.0074 - Device Disable Control 2 */
 	u8	res078[0x7c - 0x78];
-	__be32  pmjcr;		/* 0x.007c - 4 Power Management Jog Control Register */
-	__be32	powmgtcsr;	/* 0x.0080 - Power Management Status and Control Register */
-	__be32  pmrccr;		/* 0x.0084 - Power Management Reset Counter Configuration Register */
-	__be32  pmpdccr;	/* 0x.0088 - Power Management Power Down Counter Configuration Register */
-	__be32  pmcdr;		/* 0x.008c - 4Power management clock disable register */
-	__be32	mcpsumr;	/* 0x.0090 - Machine Check Summary Register */
-	__be32	rstrscr;	/* 0x.0094 - Reset Request Status and Control Register */
-	__be32  ectrstcr;	/* 0x.0098 - Exception reset control register */
-	__be32  autorstsr;	/* 0x.009c - Automatic reset status register */
-	__be32	pvr;		/* 0x.00a0 - Processor Version Register */
-	__be32	svr;		/* 0x.00a4 - System Version Register */
+	u32	pmjcr;		/* 0x.007c - 4 Power Management Jog Control
+				 *           Register
+				 */
+	u32	powmgtcsr;	/* 0x.0080 - Power Management Status and
+				 *           Control Register
+				 */
+	u32	pmrccr;		/* 0x.0084 - Power Management Reset Counter
+				 *           Configuration Register
+				 */
+	u32	pmpdccr;	/* 0x.0088 - Power Management Power Down Counter
+				 *           Configuration Register
+				 */
+	u32	pmcdr;		/* 0x.008c - 4Power management clock disable
+				 *           register
+				 */
+	u32	mcpsumr;	/* 0x.0090 - Machine Check Summary Register */
+	u32	rstrscr;	/* 0x.0094 - Reset Request Status and
+				 *           Control Register
+				 */
+	u32	ectrstcr;	/* 0x.0098 - Exception reset control register */
+	u32	autorstsr;	/* 0x.009c - Automatic reset status register */
+	u32	pvr;		/* 0x.00a0 - Processor Version Register */
+	u32	svr;		/* 0x.00a4 - System Version Register */
 	u8	res0a8[0xb0 - 0xa8];
-	__be32	rstcr;		/* 0x.00b0 - Reset Control Register */
+	u32	rstcr;		/* 0x.00b0 - Reset Control Register */
 	u8	res0b4[0xc0 - 0xb4];
-	__be32  iovselsr;	/* 0x.00c0 - I/O voltage select status register
+	u32	iovselsr;	/* 0x.00c0 - I/O voltage select status register
 					     Called 'elbcvselcr' on 86xx SOCs */
 	u8	res0c4[0x100 - 0xc4];
-	__be32	rcwsr[16];	/* 0x.0100 - Reset Control Word Status registers
+	u32	rcwsr[16];	/* 0x.0100 - Reset Control Word Status registers
 					     There are 16 registers */
 	u8	res140[0x224 - 0x140];
-	__be32  iodelay1;	/* 0x.0224 - IO delay control register 1 */
-	__be32  iodelay2;	/* 0x.0228 - IO delay control register 2 */
+	u32	iodelay1;	/* 0x.0224 - IO delay control register 1 */
+	u32	iodelay2;	/* 0x.0228 - IO delay control register 2 */
 	u8	res22c[0x604 - 0x22c];
-	__be32	pamubypenr; 	/* 0x.604 - PAMU bypass enable register */
+	u32	pamubypenr;	/* 0x.604 - PAMU bypass enable register */
 	u8	res608[0x800 - 0x608];
-	__be32	clkdvdr;	/* 0x.0800 - Clock Divide Register */
+	u32	clkdvdr;	/* 0x.0800 - Clock Divide Register */
 	u8	res804[0x900 - 0x804];
-	__be32	ircr;		/* 0x.0900 - Infrared Control Register */
+	u32	ircr;		/* 0x.0900 - Infrared Control Register */
 	u8	res904[0x908 - 0x904];
-	__be32	dmacr;		/* 0x.0908 - DMA Control Register */
+	u32	dmacr;		/* 0x.0908 - DMA Control Register */
 	u8	res90c[0x914 - 0x90c];
-	__be32	elbccr;		/* 0x.0914 - eLBC Control Register */
+	u32	elbccr;		/* 0x.0914 - eLBC Control Register */
 	u8	res918[0xb20 - 0x918];
-	__be32	ddr1clkdr;	/* 0x.0b20 - DDR1 Clock Disable Register */
-	__be32	ddr2clkdr;	/* 0x.0b24 - DDR2 Clock Disable Register */
-	__be32	ddrclkdr;	/* 0x.0b28 - DDR Clock Disable Register */
+	u32	ddr1clkdr;	/* 0x.0b20 - DDR1 Clock Disable Register */
+	u32	ddr2clkdr;	/* 0x.0b24 - DDR2 Clock Disable Register */
+	u32	ddrclkdr;	/* 0x.0b28 - DDR Clock Disable Register */
 	u8	resb2c[0xe00 - 0xb2c];
-	__be32	clkocr;		/* 0x.0e00 - Clock Out Select Register */
+	u32	clkocr;		/* 0x.0e00 - Clock Out Select Register */
 	u8	rese04[0xe10 - 0xe04];
-	__be32	ddrdllcr;	/* 0x.0e10 - DDR DLL Control Register */
+	u32	ddrdllcr;	/* 0x.0e10 - DDR DLL Control Register */
 	u8	rese14[0xe20 - 0xe14];
-	__be32	lbcdllcr;	/* 0x.0e20 - LBC DLL Control Register */
-	__be32  cpfor;		/* 0x.0e24 - L2 charge pump fuse override register */
+	u32	lbcdllcr;	/* 0x.0e20 - LBC DLL Control Register */
+	u32	cpfor;		/* 0x.0e24 - L2 charge pump fuse override
+				 *           register
+				 */
 	u8	rese28[0xf04 - 0xe28];
-	__be32	srds1cr0;	/* 0x.0f04 - SerDes1 Control Register 0 */
-	__be32	srds1cr1;	/* 0x.0f08 - SerDes1 Control Register 0 */
+	u32	srds1cr0;	/* 0x.0f04 - SerDes1 Control Register 0 */
+	u32	srds1cr1;	/* 0x.0f08 - SerDes1 Control Register 0 */
 	u8	resf0c[0xf2c - 0xf0c];
-	__be32  itcr;		/* 0x.0f2c - Internal transaction control register */
+	u32	itcr;		/* 0x.0f2c - Internal transaction control
+				 *           register
+				 */
 	u8	resf30[0xf40 - 0xf30];
-	__be32	srds2cr0;	/* 0x.0f40 - SerDes2 Control Register 0 */
-	__be32	srds2cr1;	/* 0x.0f44 - SerDes2 Control Register 0 */
+	u32	srds2cr0;	/* 0x.0f40 - SerDes2 Control Register 0 */
+	u32	srds2cr1;	/* 0x.0f44 - SerDes2 Control Register 0 */
 } __attribute__ ((packed));
 
+u32 fsl_guts_get_svr(void);
 
 /* Alternate function signal multiplex control */
 #define MPC85xx_PMUXCR_QE(x) (0x8000 >> (x))
-- 
2.1.0.27.g96db324

[v12, 6/8] MAINTAINERS: add entry for Freescale SoC drivers

[Yangbo Lu]

Add maintainer entry for Freescale SoC drivers including
the QE library and the GUTS driver now. Also add maintainer
for QE library.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Scott Wood <oss@buserror.net>
Acked-by: Qiang Zhao <qiang.zhao@nxp.com>
---
Changes for v8:
	- Added this patch
Changes for v9:
	- Added linux-arm mail list
	- Removed GUTS driver entry
Changes for v10:
	- Changed 'DRIVER' to 'DRIVERS'
	- Added 'Acked-by' of Scott and Qiang
Changes for v11:
	- None
Changes for v12:
	- None
---
 MAINTAINERS | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 644ff65..33d3683 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4971,9 +4971,18 @@ F:	drivers/net/ethernet/freescale/fec_ptp.c
 F:	drivers/net/ethernet/freescale/fec.h
 F:	Documentation/devicetree/bindings/net/fsl-fec.txt
 
+FREESCALE SOC DRIVERS
+M:	Scott Wood <oss@buserror.net>
+L:	linuxppc-dev@lists.ozlabs.org
+L:	linux-arm-kernel@lists.infradead.org
+S:	Maintained
+F:	drivers/soc/fsl/
+F:	include/linux/fsl/
+
 FREESCALE QUICC ENGINE LIBRARY
+M:	Qiang Zhao <qiang.zhao@nxp.com>
 L:	linuxppc-dev@lists.ozlabs.org
-S:	Orphan
+S:	Maintained
 F:	drivers/soc/fsl/qe/
 F:	include/soc/fsl/*qe*.h
 F:	include/soc/fsl/*ucc*.h
-- 
2.1.0.27.g96db324

[v12, 7/8] base: soc: introduce soc_device_match() interface

[Yangbo Lu]

From: Arnd Bergmann <arnd@arndb.de>

We keep running into cases where device drivers want to know the exact
version of the a SoC they are currently running on. In the past, this has
usually been done through a vendor specific API that can be called by a
driver, or by directly accessing some kind of version register that is
not part of the device itself but that belongs to a global register area
of the chip.

Common reasons for doing this include:

- A machine is not using devicetree or similar for passing data about
  on-chip devices, but just announces their presence using boot-time
  platform devices, and the machine code itself does not care about the
  revision.

- There is existing firmware or boot loaders with existing DT binaries
  with generic compatible strings that do not identify the particular
  revision of each device, but the driver knows which SoC revisions
  include which part.

- A prerelease version of a chip has some quirks and we are using the same
  version of the bootloader and the DT blob on both the prerelease and the
  final version. An update of the DT binding seems inappropriate because
  that would involve maintaining multiple copies of the dts and/or
  bootloader.

This patch introduces the soc_device_match() interface that is meant to
work like of_match_node() but instead of identifying the version of a
device, it identifies the SoC itself using a vendor-agnostic interface.

Unlike of_match_node(), we do not do an exact string compare but instead
use glob_match() to allow wildcards in strings.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v11:
	- Added this patch for soc match
Changes for v12:
	- Corrected the author
	- Rewrited soc_device_match with while loop
---
 drivers/base/Kconfig    |  1 +
 drivers/base/soc.c      | 66 +++++++++++++++++++++++++++++++++++++++++++++++++
 include/linux/sys_soc.h |  3 +++
 3 files changed, 70 insertions(+)

diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 98504ec..f1591ad2 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -225,6 +225,7 @@ config GENERIC_CPU_AUTOPROBE
 
 config SOC_BUS
 	bool
+	select GLOB
 
 source "drivers/base/regmap/Kconfig"
 
diff --git a/drivers/base/soc.c b/drivers/base/soc.c
index 75b98aa..d2fd1ad 100644
--- a/drivers/base/soc.c
+++ b/drivers/base/soc.c
@@ -14,6 +14,7 @@
 #include <linux/spinlock.h>
 #include <linux/sys_soc.h>
 #include <linux/err.h>
+#include <linux/glob.h>
 
 static DEFINE_IDA(soc_ida);
 
@@ -168,3 +169,68 @@ static void __exit soc_bus_unregister(void)
 	bus_unregister(&soc_bus_type);
 }
 module_exit(soc_bus_unregister);
+
+static int soc_device_match_one(struct device *dev, void *arg)
+{
+	struct soc_device *soc_dev = container_of(dev, struct soc_device, dev);
+	const struct soc_device_attribute *match = arg;
+
+	if (match->machine &&
+	    !glob_match(match->machine, soc_dev->attr->machine))
+		return 0;
+
+	if (match->family &&
+	    !glob_match(match->family, soc_dev->attr->family))
+		return 0;
+
+	if (match->revision &&
+	    !glob_match(match->revision, soc_dev->attr->revision))
+		return 0;
+
+	if (match->soc_id &&
+	    !glob_match(match->soc_id, soc_dev->attr->soc_id))
+		return 0;
+
+	return 1;
+}
+
+/*
+ * soc_device_match - identify the SoC in the machine
+ * @matches: zero-terminated array of possible matches
+ *
+ * returns the first matching entry of the argument array, or NULL
+ * if none of them match.
+ *
+ * This function is meant as a helper in place of of_match_node()
+ * in cases where either no device tree is available or the information
+ * in a device node is insufficient to identify a particular variant
+ * by its compatible strings or other properties. For new devices,
+ * the DT binding should always provide unique compatible strings
+ * that allow the use of of_match_node() instead.
+ *
+ * The calling function can use the .data entry of the
+ * soc_device_attribute to pass a structure or function pointer for
+ * each entry.
+ */
+const struct soc_device_attribute *soc_device_match(
+	const struct soc_device_attribute *matches)
+{
+	int ret = 0;
+
+	if (!matches)
+		return NULL;
+
+	while (!ret) {
+		if (!(matches->machine || matches->family ||
+		      matches->revision || matches->soc_id))
+			break;
+		ret = bus_for_each_dev(&soc_bus_type, NULL, (void *)matches,
+				       soc_device_match_one);
+		if (!ret)
+			matches++;
+		else
+			return matches;
+	}
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(soc_device_match);
diff --git a/include/linux/sys_soc.h b/include/linux/sys_soc.h
index 2739ccb..9f5eb06 100644
--- a/include/linux/sys_soc.h
+++ b/include/linux/sys_soc.h
@@ -13,6 +13,7 @@ struct soc_device_attribute {
 	const char *family;
 	const char *revision;
 	const char *soc_id;
+	const void *data;
 };
 
 /**
@@ -34,4 +35,6 @@ void soc_device_unregister(struct soc_device *soc_dev);
  */
 struct device *soc_device_to_device(struct soc_device *soc);
 
+const struct soc_device_attribute *soc_device_match(
+	const struct soc_device_attribute *matches);
 #endif /* __SOC_BUS_H */
-- 
2.1.0.27.g96db324

[v12, 8/8] mmc: sdhci-of-esdhc: fix host version for T4240-R1.0-R2.0

[Yangbo Lu]

The eSDHC of T4240-R1.0-R2.0 has incorrect vender version and spec version.
Acturally the right version numbers should be VVN=0x13 and SVN = 0x1.
This patch adds the GUTS driver support for eSDHC driver to match SoC.
And fix host version to avoid that incorrect version numbers break down
the ADMA data transfer.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Scott Wood <oss@buserror.net>
---
Changes for v2:
	- Got SVR through iomap instead of dts
Changes for v3:
	- Managed GUTS through syscon instead of iomap in eSDHC driver
Changes for v4:
	- Got SVR by GUTS driver instead of SYSCON
Changes for v5:
	- Changed to get SVR through API fsl_guts_get_svr()
	- Combined patch 4, patch 5 and patch 6 into one
Changes for v6:
	- Added 'Acked-by: Ulf Hansson'
Changes for v7:
	- None
Changes for v8:
	- Added 'Acked-by: Scott Wood'
Changes for v9:
	- None
Changes for v10:
	- None
Changes for v11:
	- Changed to use soc_device_match
Changes for v12:
	- Matched soc through .family field instead of .soc_id
---
 drivers/mmc/host/Kconfig          |  1 +
 drivers/mmc/host/sdhci-of-esdhc.c | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 5274f50..a1135a9 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -144,6 +144,7 @@ config MMC_SDHCI_OF_ESDHC
 	depends on MMC_SDHCI_PLTFM
 	depends on PPC || ARCH_MXC || ARCH_LAYERSCAPE
 	select MMC_SDHCI_IO_ACCESSORS
+	select FSL_GUTS
 	help
 	  This selects the Freescale eSDHC controller support.
 
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index fb71c86..57bdb9e 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -18,6 +18,7 @@
 #include <linux/of.h>
 #include <linux/delay.h>
 #include <linux/module.h>
+#include <linux/sys_soc.h>
 #include <linux/mmc/host.h>
 #include "sdhci-pltfm.h"
 #include "sdhci-esdhc.h"
@@ -28,6 +29,7 @@
 struct sdhci_esdhc {
 	u8 vendor_ver;
 	u8 spec_ver;
+	bool quirk_incorrect_hostver;
 };
 
 /**
@@ -73,6 +75,8 @@ static u32 esdhc_readl_fixup(struct sdhci_host *host,
 static u16 esdhc_readw_fixup(struct sdhci_host *host,
 				     int spec_reg, u32 value)
 {
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_esdhc *esdhc = sdhci_pltfm_priv(pltfm_host);
 	u16 ret;
 	int shift = (spec_reg & 0x2) * 8;
 
@@ -80,6 +84,12 @@ static u16 esdhc_readw_fixup(struct sdhci_host *host,
 		ret = value & 0xffff;
 	else
 		ret = (value >> shift) & 0xffff;
+	/* Workaround for T4240-R1.0-R2.0 eSDHC which has incorrect
+	 * vendor version and spec version information.
+	 */
+	if ((spec_reg == SDHCI_HOST_VERSION) &&
+	    (esdhc->quirk_incorrect_hostver))
+		ret = (VENDOR_V_23 << SDHCI_VENDOR_VER_SHIFT) | SDHCI_SPEC_200;
 	return ret;
 }
 
@@ -558,6 +568,12 @@ static const struct sdhci_pltfm_data sdhci_esdhc_le_pdata = {
 	.ops = &sdhci_esdhc_le_ops,
 };
 
+static struct soc_device_attribute soc_incorrect_hostver[] = {
+	{ .family = "QorIQ T4240", .revision = "1.0", },
+	{ .family = "QorIQ T4240", .revision = "2.0", },
+	{ },
+};
+
 static void esdhc_init(struct platform_device *pdev, struct sdhci_host *host)
 {
 	struct sdhci_pltfm_host *pltfm_host;
@@ -571,6 +587,10 @@ static void esdhc_init(struct platform_device *pdev, struct sdhci_host *host)
 	esdhc->vendor_ver = (host_ver & SDHCI_VENDOR_VER_MASK) >>
 			     SDHCI_VENDOR_VER_SHIFT;
 	esdhc->spec_ver = host_ver & SDHCI_SPEC_VER_MASK;
+	if (soc_device_match(soc_incorrect_hostver))
+		esdhc->quirk_incorrect_hostver = true;
+	else
+		esdhc->quirk_incorrect_hostver = false;
 }
 
 static int sdhci_esdhc_probe(struct platform_device *pdev)
-- 
2.1.0.27.g96db324

Re: [v12, 7/8] base: soc: introduce soc_device_match() interface

[Alexander Shiyan]

>Среда, 21 сентября 2016, 9:57 +03:00 от Yangbo Lu <yangbo.lu@nxp.com>:
>
>From: Arnd Bergmann < arnd@arndb.de >
>
>We keep running into cases where device drivers want to know the exact
>version of the a SoC they are currently running on. In the past, this has
>usually been done through a vendor specific API that can be called by a
>driver, or by directly accessing some kind of version register that is
>not part of the device itself but that belongs to a global register area
>of the chip.
...
>+const struct soc_device_attribute *soc_device_match(
>+const struct soc_device_attribute *matches)
>+{
>+int ret = 0;
>+
>+if (!matches)
>+return NULL;
>+
>+while (!ret) {
>+if (!(matches->machine || matches->family ||
>+      matches->revision || matches->soc_id))
>+break;
>+ret = bus_for_each_dev(&soc_bus_type, NULL, (void *)matches,
>+       soc_device_match_one);
>+if (!ret)
>+matches++;

So, what happen if next "matches" (after increment) will be NULL?

I think you should use while(matches) at the start of this procedure.

---

Re: [v12, 7/8] base: soc: introduce soc_device_match() interface

[Peter Rosin]

On 2016-09-21 09:56, Alexander Shiyan wrote:
>> Среда, 21 сентября 2016, 9:57 +03:00 от Yangbo Lu <yangbo.lu@nxp.com>:
>>
>> From: Arnd Bergmann < arnd@arndb.de >
>>
>> We keep running into cases where device drivers want to know the exact
>> version of the a SoC they are currently running on. In the past, this has
>> usually been done through a vendor specific API that can be called by a
>> driver, or by directly accessing some kind of version register that is
>> not part of the device itself but that belongs to a global register area
>> of the chip.
> ...
>> +const struct soc_device_attribute *soc_device_match(
>> +const struct soc_device_attribute *matches)
>> +{
>> +int ret = 0;
>> +
>> +if (!matches)
>> +return NULL;
>> +
>> +while (!ret) {
>> +if (!(matches->machine || matches->family ||
>> +      matches->revision || matches->soc_id))
>> +break;
>> +ret = bus_for_each_dev(&soc_bus_type, NULL, (void *)matches,
>> +       soc_device_match_one);
>> +if (!ret)
>> +matches++;
> 
> So, what happen if next "matches" (after increment) will be NULL?

A crash?

> I think you should use while(matches) at the start of this procedure.

*arrgh*

*If* matches wrap, you indeed have *big* problems. *Elsewhere*

Hint: Please read the review comments on the previous version of this
series [1] before commenting further.

Cheers,
Peter

[1] https://www.mail-archive.com/netdev@vger.kernel.org/msg126617.html

RE: [v12, 0/8] Fix eSDHC host version register bug

[Y.B. Lu]

Any comments about this version patchset ?

:)


> -----Original Message-----
> From: Yangbo Lu [mailto:yangbo.lu@nxp.com]
> Sent: Wednesday, September 21, 2016 2:57 PM
> To: linux-mmc@vger.kernel.org; ulf.hansson@linaro.org; Scott Wood; Arnd
> Bergmann
> Cc: linuxppc-dev@lists.ozlabs.org; devicetree@vger.kernel.org; linux-arm-
> kernel@lists.infradead.org; linux-kernel@vger.kernel.org; linux-
> clk@vger.kernel.org; linux-i2c@vger.kernel.org; iommu@lists.linux-
> foundation.org; netdev@vger.kernel.org; Mark Rutland; Rob Herring;
> Russell King; Jochen Friedrich; Joerg Roedel; Claudiu Manoil; Bhupesh
> Sharma; Qiang Zhao; Kumar Gala; Santosh Shilimkar; Leo Li; X.B. Xie; M.H.
> Lian; Y.B. Lu
> Subject: [v12, 0/8] Fix eSDHC host version register bug
> 
> This patchset is used to fix a host version register bug in the T4240-
> R1.0-R2.0 eSDHC controller. To match the SoC version and revision, 10
> previous version patchsets had tried many methods but all of them were
> rejected by reviewers.
> Such as
> 	- dts compatible method
> 	- syscon method
> 	- ifdef PPC method
> 	- GUTS driver getting SVR method
> Anrd suggested a soc_device_match method in v10, and this is the only
> available method left now. This v11 patchset introduces the
> soc_device_match interface in soc driver.
> 
> The first six patches of Yangbo are to add the GUTS driver. This is used
> to register a soc device which contain soc version and revision
> information.
> The other two patches introduce the soc_device_match method in soc driver
> and apply it on esdhc driver to fix this bug.
> 
> Arnd Bergmann (1):
>   base: soc: introduce soc_device_match() interface
> 
> Yangbo Lu (7):
>   dt: bindings: update Freescale DCFG compatible
>   ARM64: dts: ls2080a: add device configuration node
>   dt: bindings: move guts devicetree doc out of powerpc directory
>   powerpc/fsl: move mpc85xx.h to include/linux/fsl
>   soc: fsl: add GUTS driver for QorIQ platforms
>   MAINTAINERS: add entry for Freescale SoC drivers
>   mmc: sdhci-of-esdhc: fix host version for T4240-R1.0-R2.0
> 
>  Documentation/devicetree/bindings/arm/fsl.txt      |   6 +-
>  .../bindings/{powerpc => soc}/fsl/guts.txt         |   3 +
>  MAINTAINERS                                        |  11 +-
>  arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi     |   6 +
>  arch/powerpc/kernel/cpu_setup_fsl_booke.S          |   2 +-
>  arch/powerpc/sysdev/fsl_pci.c                      |   2 +-
>  drivers/base/Kconfig                               |   1 +
>  drivers/base/soc.c                                 |  66 ++++++
>  drivers/clk/clk-qoriq.c                            |   3 +-
>  drivers/i2c/busses/i2c-mpc.c                       |   2 +-
>  drivers/iommu/fsl_pamu.c                           |   3 +-
>  drivers/mmc/host/Kconfig                           |   1 +
>  drivers/mmc/host/sdhci-of-esdhc.c                  |  20 ++
>  drivers/net/ethernet/freescale/gianfar.c           |   2 +-
>  drivers/soc/Kconfig                                |   2 +-
>  drivers/soc/fsl/Kconfig                            |  19 ++
>  drivers/soc/fsl/Makefile                           |   1 +
>  drivers/soc/fsl/guts.c                             | 257
> +++++++++++++++++++++
>  include/linux/fsl/guts.h                           | 125 ++++++----
>  .../asm/mpc85xx.h => include/linux/fsl/svr.h       |   4 +-
>  include/linux/sys_soc.h                            |   3 +
>  21 files changed, 478 insertions(+), 61 deletions(-)  rename
> Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt (91%)
> create mode 100644 drivers/soc/fsl/Kconfig  create mode 100644
> drivers/soc/fsl/guts.c  rename arch/powerpc/include/asm/mpc85xx.h =>
> include/linux/fsl/svr.h (97%)
> 
> --
> 2.1.0.27.g96db324

RE: [v12, 0/8] Fix eSDHC host version register bug

[Y.B. Lu]

Hi Uffe, Arnd and Scott,

Any comments on this latest patcheset?
Could we consider to merge it if no any other changes needed?
:)


Thanks.

Best regards,
Yangbo Lu

> -----Original Message-----
> From: Y.B. Lu
> Sent: Monday, September 26, 2016 11:15 AM
> To: linux-mmc@vger.kernel.org; ulf.hansson@linaro.org; Scott Wood; Arnd
> Bergmann
> Cc: linuxppc-dev@lists.ozlabs.org; devicetree@vger.kernel.org; linux-arm-
> kernel@lists.infradead.org; linux-kernel@vger.kernel.org; linux-
> clk@vger.kernel.org; linux-i2c@vger.kernel.org; iommu@lists.linux-
> foundation.org; netdev@vger.kernel.org; Mark Rutland; Rob Herring;
> Russell King; Jochen Friedrich; Joerg Roedel; Claudiu Manoil; Bhupesh
> Sharma; Qiang Zhao; Kumar Gala; Santosh Shilimkar; Leo Li; X.B. Xie; M.H.
> Lian
> Subject: RE: [v12, 0/8] Fix eSDHC host version register bug
> 
> Any comments about this version patchset ?
> 
> :)
> 
> 
> > -----Original Message-----
> > From: Yangbo Lu [mailto:yangbo.lu@nxp.com]
> > Sent: Wednesday, September 21, 2016 2:57 PM
> > To: linux-mmc@vger.kernel.org; ulf.hansson@linaro.org; Scott Wood;
> > Arnd Bergmann
> > Cc: linuxppc-dev@lists.ozlabs.org; devicetree@vger.kernel.org;
> > linux-arm- kernel@lists.infradead.org; linux-kernel@vger.kernel.org;
> > linux- clk@vger.kernel.org; linux-i2c@vger.kernel.org;
> > iommu@lists.linux- foundation.org; netdev@vger.kernel.org; Mark
> > Rutland; Rob Herring; Russell King; Jochen Friedrich; Joerg Roedel;
> > Claudiu Manoil; Bhupesh Sharma; Qiang Zhao; Kumar Gala; Santosh
> Shilimkar; Leo Li; X.B. Xie; M.H.
> > Lian; Y.B. Lu
> > Subject: [v12, 0/8] Fix eSDHC host version register bug
> >
> > This patchset is used to fix a host version register bug in the T4240-
> > R1.0-R2.0 eSDHC controller. To match the SoC version and revision, 10
> > previous version patchsets had tried many methods but all of them were
> > rejected by reviewers.
> > Such as
> > 	- dts compatible method
> > 	- syscon method
> > 	- ifdef PPC method
> > 	- GUTS driver getting SVR method
> > Anrd suggested a soc_device_match method in v10, and this is the only
> > available method left now. This v11 patchset introduces the
> > soc_device_match interface in soc driver.
> >
> > The first six patches of Yangbo are to add the GUTS driver. This is
> > used to register a soc device which contain soc version and revision
> > information.
> > The other two patches introduce the soc_device_match method in soc
> > driver and apply it on esdhc driver to fix this bug.
> >
> > Arnd Bergmann (1):
> >   base: soc: introduce soc_device_match() interface
> >
> > Yangbo Lu (7):
> >   dt: bindings: update Freescale DCFG compatible
> >   ARM64: dts: ls2080a: add device configuration node
> >   dt: bindings: move guts devicetree doc out of powerpc directory
> >   powerpc/fsl: move mpc85xx.h to include/linux/fsl
> >   soc: fsl: add GUTS driver for QorIQ platforms
> >   MAINTAINERS: add entry for Freescale SoC drivers
> >   mmc: sdhci-of-esdhc: fix host version for T4240-R1.0-R2.0
> >
> >  Documentation/devicetree/bindings/arm/fsl.txt      |   6 +-
> >  .../bindings/{powerpc => soc}/fsl/guts.txt         |   3 +
> >  MAINTAINERS                                        |  11 +-
> >  arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi     |   6 +
> >  arch/powerpc/kernel/cpu_setup_fsl_booke.S          |   2 +-
> >  arch/powerpc/sysdev/fsl_pci.c                      |   2 +-
> >  drivers/base/Kconfig                               |   1 +
> >  drivers/base/soc.c                                 |  66 ++++++
> >  drivers/clk/clk-qoriq.c                            |   3 +-
> >  drivers/i2c/busses/i2c-mpc.c                       |   2 +-
> >  drivers/iommu/fsl_pamu.c                           |   3 +-
> >  drivers/mmc/host/Kconfig                           |   1 +
> >  drivers/mmc/host/sdhci-of-esdhc.c                  |  20 ++
> >  drivers/net/ethernet/freescale/gianfar.c           |   2 +-
> >  drivers/soc/Kconfig                                |   2 +-
> >  drivers/soc/fsl/Kconfig                            |  19 ++
> >  drivers/soc/fsl/Makefile                           |   1 +
> >  drivers/soc/fsl/guts.c                             | 257
> > +++++++++++++++++++++
> >  include/linux/fsl/guts.h                           | 125 ++++++----
> >  .../asm/mpc85xx.h => include/linux/fsl/svr.h       |   4 +-
> >  include/linux/sys_soc.h                            |   3 +
> >  21 files changed, 478 insertions(+), 61 deletions(-)  rename
> > Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt (91%)
> > create mode 100644 drivers/soc/fsl/Kconfig  create mode 100644
> > drivers/soc/fsl/guts.c  rename arch/powerpc/include/asm/mpc85xx.h =>
> > include/linux/fsl/svr.h (97%)
> >
> > --
> > 2.1.0.27.g96db324

Re: [v12, 0/8] Fix eSDHC host version register bug

[Ulf Hansson]

On 21 September 2016 at 08:57, Yangbo Lu <yangbo.lu@nxp.com> wrote:
> This patchset is used to fix a host version register bug in the T4240-R1.0-R2.0
> eSDHC controller. To match the SoC version and revision, 10 previous version
> patchsets had tried many methods but all of them were rejected by reviewers.
> Such as
>         - dts compatible method
>         - syscon method
>         - ifdef PPC method
>         - GUTS driver getting SVR method
> Anrd suggested a soc_device_match method in v10, and this is the only available
> method left now. This v11 patchset introduces the soc_device_match interface in
> soc driver.
>
> The first six patches of Yangbo are to add the GUTS driver. This is used to
> register a soc device which contain soc version and revision information.
> The other two patches introduce the soc_device_match method in soc driver
> and apply it on esdhc driver to fix this bug.
>
> Arnd Bergmann (1):
>   base: soc: introduce soc_device_match() interface
>
> Yangbo Lu (7):
>   dt: bindings: update Freescale DCFG compatible
>   ARM64: dts: ls2080a: add device configuration node
>   dt: bindings: move guts devicetree doc out of powerpc directory
>   powerpc/fsl: move mpc85xx.h to include/linux/fsl
>   soc: fsl: add GUTS driver for QorIQ platforms
>   MAINTAINERS: add entry for Freescale SoC drivers
>   mmc: sdhci-of-esdhc: fix host version for T4240-R1.0-R2.0
>
>  Documentation/devicetree/bindings/arm/fsl.txt      |   6 +-
>  .../bindings/{powerpc => soc}/fsl/guts.txt         |   3 +
>  MAINTAINERS                                        |  11 +-
>  arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi     |   6 +
>  arch/powerpc/kernel/cpu_setup_fsl_booke.S          |   2 +-
>  arch/powerpc/sysdev/fsl_pci.c                      |   2 +-
>  drivers/base/Kconfig                               |   1 +
>  drivers/base/soc.c                                 |  66 ++++++
>  drivers/clk/clk-qoriq.c                            |   3 +-
>  drivers/i2c/busses/i2c-mpc.c                       |   2 +-
>  drivers/iommu/fsl_pamu.c                           |   3 +-
>  drivers/mmc/host/Kconfig                           |   1 +
>  drivers/mmc/host/sdhci-of-esdhc.c                  |  20 ++
>  drivers/net/ethernet/freescale/gianfar.c           |   2 +-
>  drivers/soc/Kconfig                                |   2 +-
>  drivers/soc/fsl/Kconfig                            |  19 ++
>  drivers/soc/fsl/Makefile                           |   1 +
>  drivers/soc/fsl/guts.c                             | 257 +++++++++++++++++++++
>  include/linux/fsl/guts.h                           | 125 ++++++----
>  .../asm/mpc85xx.h => include/linux/fsl/svr.h       |   4 +-
>  include/linux/sys_soc.h                            |   3 +
>  21 files changed, 478 insertions(+), 61 deletions(-)
>  rename Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt (91%)
>  create mode 100644 drivers/soc/fsl/Kconfig
>  create mode 100644 drivers/soc/fsl/guts.c
>  rename arch/powerpc/include/asm/mpc85xx.h => include/linux/fsl/svr.h (97%)
>
> --
> 2.1.0.27.g96db324
>

This looks good to me! I am not sure which tree you want this to be
picked up through, but unless no other volunteers I can take it
through my mmc tree.

Although, before considering to apply, I need an ack from Scott/Arnd
for the guts driver in patch 5/8 and I need an ack from Greg for patch
7/8, where the soc_device_match() interface is added (seems like you
didn't add him on cc/to).

Kind regards
Uffe

RE: [v12, 0/8] Fix eSDHC host version register bug

[Y.B. Lu]

> -----Original Message-----
> From: Ulf Hansson [mailto:ulf.hansson@linaro.org]
> Sent: Tuesday, October 18, 2016 6:48 PM
> To: Y.B. Lu
> Cc: linux-mmc; Scott Wood; Arnd Bergmann; linuxppc-dev@lists.ozlabs.org;
> devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org; linux-
> kernel@vger.kernel.org; linux-clk; linux-i2c@vger.kernel.org;
> iommu@lists.linux-foundation.org; netdev@vger.kernel.org; Mark Rutland;
> Rob Herring; Russell King; Jochen Friedrich; Joerg Roedel; Claudiu Manoil;
> Bhupesh Sharma; Qiang Zhao; Kumar Gala; Santosh Shilimkar; Leo Li; X.B.
> Xie; M.H. Lian
> Subject: Re: [v12, 0/8] Fix eSDHC host version register bug
> 
> On 21 September 2016 at 08:57, Yangbo Lu <yangbo.lu@nxp.com> wrote:
> > This patchset is used to fix a host version register bug in the
> > T4240-R1.0-R2.0 eSDHC controller. To match the SoC version and
> > revision, 10 previous version patchsets had tried many methods but all
> of them were rejected by reviewers.
> > Such as
> >         - dts compatible method
> >         - syscon method
> >         - ifdef PPC method
> >         - GUTS driver getting SVR method Anrd suggested a
> > soc_device_match method in v10, and this is the only available method
> > left now. This v11 patchset introduces the soc_device_match interface
> > in soc driver.
> >
> > The first six patches of Yangbo are to add the GUTS driver. This is
> > used to register a soc device which contain soc version and revision
> information.
> > The other two patches introduce the soc_device_match method in soc
> > driver and apply it on esdhc driver to fix this bug.
> >
> > Arnd Bergmann (1):
> >   base: soc: introduce soc_device_match() interface
> >
> > Yangbo Lu (7):
> >   dt: bindings: update Freescale DCFG compatible
> >   ARM64: dts: ls2080a: add device configuration node
> >   dt: bindings: move guts devicetree doc out of powerpc directory
> >   powerpc/fsl: move mpc85xx.h to include/linux/fsl
> >   soc: fsl: add GUTS driver for QorIQ platforms
> >   MAINTAINERS: add entry for Freescale SoC drivers
> >   mmc: sdhci-of-esdhc: fix host version for T4240-R1.0-R2.0
> >
> >  Documentation/devicetree/bindings/arm/fsl.txt      |   6 +-
> >  .../bindings/{powerpc => soc}/fsl/guts.txt         |   3 +
> >  MAINTAINERS                                        |  11 +-
> >  arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi     |   6 +
> >  arch/powerpc/kernel/cpu_setup_fsl_booke.S          |   2 +-
> >  arch/powerpc/sysdev/fsl_pci.c                      |   2 +-
> >  drivers/base/Kconfig                               |   1 +
> >  drivers/base/soc.c                                 |  66 ++++++
> >  drivers/clk/clk-qoriq.c                            |   3 +-
> >  drivers/i2c/busses/i2c-mpc.c                       |   2 +-
> >  drivers/iommu/fsl_pamu.c                           |   3 +-
> >  drivers/mmc/host/Kconfig                           |   1 +
> >  drivers/mmc/host/sdhci-of-esdhc.c                  |  20 ++
> >  drivers/net/ethernet/freescale/gianfar.c           |   2 +-
> >  drivers/soc/Kconfig                                |   2 +-
> >  drivers/soc/fsl/Kconfig                            |  19 ++
> >  drivers/soc/fsl/Makefile                           |   1 +
> >  drivers/soc/fsl/guts.c                             | 257
> +++++++++++++++++++++
> >  include/linux/fsl/guts.h                           | 125 ++++++----
> >  .../asm/mpc85xx.h => include/linux/fsl/svr.h       |   4 +-
> >  include/linux/sys_soc.h                            |   3 +
> >  21 files changed, 478 insertions(+), 61 deletions(-)  rename
> > Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt (91%)
> > create mode 100644 drivers/soc/fsl/Kconfig  create mode 100644
> > drivers/soc/fsl/guts.c  rename arch/powerpc/include/asm/mpc85xx.h =>
> > include/linux/fsl/svr.h (97%)
> >
> > --
> > 2.1.0.27.g96db324
> >
> 
> This looks good to me! I am not sure which tree you want this to be
> picked up through, but unless no other volunteers I can take it through
> my mmc tree.
> 
> Although, before considering to apply, I need an ack from Scott/Arnd for
> the guts driver in patch 5/8 and I need an ack from Greg for patch 7/8,
> where the soc_device_match() interface is added (seems like you didn't
> add him on cc/to).
> 

[Lu Yangbo-B47093] Thanks a lot for your clarifying, Uffe.
This patchset was based on mmc tree, and needed your picking up.
But I think it needs to be rebased now since I saw qbman driver was in drivers/soc/fsl/ now.
I will do that after collecting others' ACKs or comments.

Hi Scott and Arnd,
Could I get your ACTs if there're no other changes needed?
Thanks a lot.

> Kind regards
> Uffe

RE: [v12, 0/8] Fix eSDHC host version register bug

[Y.B. Lu]

+ Greg

Hi Greg,

I submitted this patchset for a MMC bug fix, and introduce the below patch which needs your ACK.
> > Arnd Bergmann (1):
> >   base: soc: introduce soc_device_match() interface
https://patchwork.kernel.org/patch/9342913/

Could you help to review it and give some comments or ACK.
Thank you very much.



Best regards,
Yangbo Lu


> -----Original Message-----
> From: Ulf Hansson [mailto:ulf.hansson@linaro.org]
> Sent: Tuesday, October 18, 2016 6:48 PM
> To: Y.B. Lu
> Cc: linux-mmc; Scott Wood; Arnd Bergmann; linuxppc-dev@lists.ozlabs.org;
> devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org; linux-
> kernel@vger.kernel.org; linux-clk; linux-i2c@vger.kernel.org;
> iommu@lists.linux-foundation.org; netdev@vger.kernel.org; Mark Rutland;
> Rob Herring; Russell King; Jochen Friedrich; Joerg Roedel; Claudiu Manoil;
> Bhupesh Sharma; Qiang Zhao; Kumar Gala; Santosh Shilimkar; Leo Li; X.B.
> Xie; M.H. Lian
> Subject: Re: [v12, 0/8] Fix eSDHC host version register bug
> 
> On 21 September 2016 at 08:57, Yangbo Lu <yangbo.lu@nxp.com> wrote:
> > This patchset is used to fix a host version register bug in the
> > T4240-R1.0-R2.0 eSDHC controller. To match the SoC version and
> > revision, 10 previous version patchsets had tried many methods but all
> of them were rejected by reviewers.
> > Such as
> >         - dts compatible method
> >         - syscon method
> >         - ifdef PPC method
> >         - GUTS driver getting SVR method Anrd suggested a
> > soc_device_match method in v10, and this is the only available method
> > left now. This v11 patchset introduces the soc_device_match interface
> > in soc driver.
> >
> > The first six patches of Yangbo are to add the GUTS driver. This is
> > used to register a soc device which contain soc version and revision
> information.
> > The other two patches introduce the soc_device_match method in soc
> > driver and apply it on esdhc driver to fix this bug.
> >
> > Arnd Bergmann (1):
> >   base: soc: introduce soc_device_match() interface
> >
> > Yangbo Lu (7):
> >   dt: bindings: update Freescale DCFG compatible
> >   ARM64: dts: ls2080a: add device configuration node
> >   dt: bindings: move guts devicetree doc out of powerpc directory
> >   powerpc/fsl: move mpc85xx.h to include/linux/fsl
> >   soc: fsl: add GUTS driver for QorIQ platforms
> >   MAINTAINERS: add entry for Freescale SoC drivers
> >   mmc: sdhci-of-esdhc: fix host version for T4240-R1.0-R2.0
> >
> >  Documentation/devicetree/bindings/arm/fsl.txt      |   6 +-
> >  .../bindings/{powerpc => soc}/fsl/guts.txt         |   3 +
> >  MAINTAINERS                                        |  11 +-
> >  arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi     |   6 +
> >  arch/powerpc/kernel/cpu_setup_fsl_booke.S          |   2 +-
> >  arch/powerpc/sysdev/fsl_pci.c                      |   2 +-
> >  drivers/base/Kconfig                               |   1 +
> >  drivers/base/soc.c                                 |  66 ++++++
> >  drivers/clk/clk-qoriq.c                            |   3 +-
> >  drivers/i2c/busses/i2c-mpc.c                       |   2 +-
> >  drivers/iommu/fsl_pamu.c                           |   3 +-
> >  drivers/mmc/host/Kconfig                           |   1 +
> >  drivers/mmc/host/sdhci-of-esdhc.c                  |  20 ++
> >  drivers/net/ethernet/freescale/gianfar.c           |   2 +-
> >  drivers/soc/Kconfig                                |   2 +-
> >  drivers/soc/fsl/Kconfig                            |  19 ++
> >  drivers/soc/fsl/Makefile                           |   1 +
> >  drivers/soc/fsl/guts.c                             | 257
> +++++++++++++++++++++
> >  include/linux/fsl/guts.h                           | 125 ++++++----
> >  .../asm/mpc85xx.h => include/linux/fsl/svr.h       |   4 +-
> >  include/linux/sys_soc.h                            |   3 +
> >  21 files changed, 478 insertions(+), 61 deletions(-)  rename
> > Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt (91%)
> > create mode 100644 drivers/soc/fsl/Kconfig  create mode 100644
> > drivers/soc/fsl/guts.c  rename arch/powerpc/include/asm/mpc85xx.h =>
> > include/linux/fsl/svr.h (97%)
> >
> > --
> > 2.1.0.27.g96db324
> >
> 
> This looks good to me! I am not sure which tree you want this to be
> picked up through, but unless no other volunteers I can take it through
> my mmc tree.
> 
> Although, before considering to apply, I need an ack from Scott/Arnd for
> the guts driver in patch 5/8 and I need an ack from Greg for patch 7/8,
> where the soc_device_match() interface is added (seems like you didn't
> add him on cc/to).
> 
> Kind regards
> Uffe

Re: [v12, 5/8] soc: fsl: add GUTS driver for QorIQ platforms

[Scott Wood]

On Wed, 2016-09-21 at 14:57 +0800, Yangbo Lu wrote:
> diff --git a/drivers/soc/fsl/Kconfig b/drivers/soc/fsl/Kconfig
> new file mode 100644
> index 0000000..b99764c
> --- /dev/null
> +++ b/drivers/soc/fsl/Kconfig
> @@ -0,0 +1,19 @@
> +#
> +# Freescale SOC drivers
> +#
> +
> +source "drivers/soc/fsl/qe/Kconfig"
> +
> +config FSL_GUTS
> +	bool "Freescale QorIQ GUTS driver"
> +	select SOC_BUS
> +	help
> +	  The global utilities block controls power management, I/O device
> +	  enabling, power-onreset(POR) configuration monitoring, alternate
> +	  function selection for multiplexed signals,and clock control.
> +	  This driver is to manage and access global utilities block.
> +	  Initially only reading SVR and registering soc device are
> supported.
> +	  Other guts accesses, such as reading RCW, should eventually be
> moved
> +	  into this driver as well.
> +
> +	  If you want GUTS driver support, you should say Y here.

This is user-enablable without dependencies, which means it will break some
randconfigs.  If this is to be enabled via select then remove the text after
"bool".

> +/* SoC die attribute definition for QorIQ platform */
> +static const struct fsl_soc_die_attr fsl_soc_die[] = {
> +#ifdef CONFIG_PPC
> +	/*
> +	 * Power Architecture-based SoCs T Series
> +	 */
> +
> +	/* Die: T4240, SoC: T4240/T4160/T4080 */
> +	{ .die		= "T4240",
> +	  .svr		= 0x82400000,
> +	  .mask		= 0xfff00000,
> +	},
> +	/* Die: T1040, SoC: T1040/T1020/T1042/T1022 */
> +	{ .die		= "T1040",
> +	  .svr		= 0x85200000,
> +	  .mask		= 0xfff00000,
> +	},
> +	/* Die: T2080, SoC: T2080/T2081 */
> +	{ .die		= "T2080",
> +	  .svr		= 0x85300000,
> +	  .mask		= 0xfff00000,
> +	},
> +	/* Die: T1024, SoC: T1024/T1014/T1023/T1013 */
> +	{ .die		= "T1024",
> +	  .svr		= 0x85400000,
> +	  .mask		= 0xfff00000,
> +	},
> +#endif /* CONFIG_PPC */
> +#if defined(CONFIG_ARCH_MXC) || defined(CONFIG_ARCH_LAYERSCAPE)

Will this driver ever be probed on MXC?  Why do we need these ifdefs at all?


> +	/*
> +	 * ARM-based SoCs LS Series
> +	 */
> +
> +	/* Die: LS1043A, SoC: LS1043A/LS1023A */
> +	{ .die		= "LS1043A",
> +	  .svr		= 0x87920000,
> +	  .mask		= 0xffff0000,
> +	},
> +	/* Die: LS2080A, SoC: LS2080A/LS2040A/LS2085A */
> +	{ .die		= "LS2080A",
> +	  .svr		= 0x87010000,
> +	  .mask		= 0xff3f0000,
> +	},
> +	/* Die: LS1088A, SoC: LS1088A/LS1048A/LS1084A/LS1044A */
> +	{ .die		= "LS1088A",
> +	  .svr		= 0x87030000,
> +	  .mask		= 0xff3f0000,
> +	},
> +	/* Die: LS1012A, SoC: LS1012A */
> +	{ .die		= "LS1012A",
> +	  .svr		= 0x87040000,
> +	  .mask		= 0xffff0000,
> +	},
> +	/* Die: LS1046A, SoC: LS1046A/LS1026A */
> +	{ .die		= "LS1046A",
> +	  .svr		= 0x87070000,
> +	  .mask		= 0xffff0000,
> +	},
> +	/* Die: LS2088A, SoC: LS2088A/LS2048A/LS2084A/LS2044A */
> +	{ .die		= "LS2088A",
> +	  .svr		= 0x87090000,
> +	  .mask		= 0xff3f0000,
> +	},
> +	/* Die: LS1021A, SoC: LS1021A/LS1020A/LS1022A
> +	 * Note: Put this die at the end in cause of incorrect
> identification
> +	 */
> +	{ .die		= "LS1021A",
> +	  .svr		= 0x87000000,
> +	  .mask		= 0xfff00000,
> +	},
> +#endif /* CONFIG_ARCH_MXC || CONFIG_ARCH_LAYERSCAPE */

Instead of relying on ordering, add more bits to the mask so that there's no
overlap.  I think 0xfff70000 would work.

> +out:
> +	kfree(soc_dev_attr.machine);
> +	kfree(soc_dev_attr.family);
> +	kfree(soc_dev_attr.soc_id);
> +	kfree(soc_dev_attr.revision);
> +	iounmap(guts->regs);
> +out_free:
> +	kfree(guts);
> +	return ret;
> +}

Please use devm.

-Scott

RE: [v12, 5/8] soc: fsl: add GUTS driver for QorIQ platforms

[Y.B. Lu]

Hi Scott,


> -----Original Message-----
> From: Scott Wood [mailto:oss@buserror.net]
> Sent: Thursday, October 27, 2016 1:06 AM
> To: Y.B. Lu; linux-mmc@vger.kernel.org; ulf.hansson@linaro.org; Arnd
> Bergmann
> Cc: linuxppc-dev@lists.ozlabs.org; devicetree@vger.kernel.org; linux-arm-
> kernel@lists.infradead.org; linux-kernel@vger.kernel.org; linux-
> clk@vger.kernel.org; linux-i2c@vger.kernel.org; iommu@lists.linux-
> foundation.org; netdev@vger.kernel.org; Mark Rutland; Rob Herring;
> Russell King; Jochen Friedrich; Joerg Roedel; Claudiu Manoil; Bhupesh
> Sharma; Qiang Zhao; Kumar Gala; Santosh Shilimkar; Leo Li; X.B. Xie; M.H.
> Lian
> Subject: Re: [v12, 5/8] soc: fsl: add GUTS driver for QorIQ platforms
> 
> On Wed, 2016-09-21 at 14:57 +0800, Yangbo Lu wrote:
> > diff --git a/drivers/soc/fsl/Kconfig b/drivers/soc/fsl/Kconfig new
> > file mode 100644 index 0000000..b99764c
> > --- /dev/null
> > +++ b/drivers/soc/fsl/Kconfig
> > @@ -0,0 +1,19 @@
> > +#
> > +# Freescale SOC drivers
> > +#
> > +
> > +source "drivers/soc/fsl/qe/Kconfig"
> > +
> > +config FSL_GUTS
> > +	bool "Freescale QorIQ GUTS driver"
> > +	select SOC_BUS
> > +	help
> > +	  The global utilities block controls power management, I/O device
> > +	  enabling, power-onreset(POR) configuration monitoring, alternate
> > +	  function selection for multiplexed signals,and clock control.
> > +	  This driver is to manage and access global utilities block.
> > +	  Initially only reading SVR and registering soc device are
> > supported.
> > +	  Other guts accesses, such as reading RCW, should eventually be
> > moved
> > +	  into this driver as well.
> > +
> > +	  If you want GUTS driver support, you should say Y here.
> 
> This is user-enablable without dependencies, which means it will break
> some randconfigs.  If this is to be enabled via select then remove the
> text after "bool".

[Lu Yangbo-B47093] Will enable it via select and remove text after 'bool'.
 
> 
> > +/* SoC die attribute definition for QorIQ platform */ static const
> > +struct fsl_soc_die_attr fsl_soc_die[] = { #ifdef CONFIG_PPC
> > +	/*
> > +	 * Power Architecture-based SoCs T Series
> > +	 */
> > +
> > +	/* Die: T4240, SoC: T4240/T4160/T4080 */
> > +	{ .die		= "T4240",
> > +	  .svr		= 0x82400000,
> > +	  .mask		= 0xfff00000,
> > +	},
> > +	/* Die: T1040, SoC: T1040/T1020/T1042/T1022 */
> > +	{ .die		= "T1040",
> > +	  .svr		= 0x85200000,
> > +	  .mask		= 0xfff00000,
> > +	},
> > +	/* Die: T2080, SoC: T2080/T2081 */
> > +	{ .die		= "T2080",
> > +	  .svr		= 0x85300000,
> > +	  .mask		= 0xfff00000,
> > +	},
> > +	/* Die: T1024, SoC: T1024/T1014/T1023/T1013 */
> > +	{ .die		= "T1024",
> > +	  .svr		= 0x85400000,
> > +	  .mask		= 0xfff00000,
> > +	},
> > +#endif /* CONFIG_PPC */
> > +#if defined(CONFIG_ARCH_MXC) || defined(CONFIG_ARCH_LAYERSCAPE)
> 
> Will this driver ever be probed on MXC?  Why do we need these ifdefs at
> all?

[Lu Yangbo-B47093] Will remove them. In the previous version, we use too many members for soc definition, so I add #ifdef for ARCH. 
CONFIG_ARCH_MXC was for ls1021a.

> 
> 
> > +	/*
> > +	 * ARM-based SoCs LS Series
> > +	 */
> > +
> > +	/* Die: LS1043A, SoC: LS1043A/LS1023A */
> > +	{ .die		= "LS1043A",
> > +	  .svr		= 0x87920000,
> > +	  .mask		= 0xffff0000,
> > +	},
> > +	/* Die: LS2080A, SoC: LS2080A/LS2040A/LS2085A */
> > +	{ .die		= "LS2080A",
> > +	  .svr		= 0x87010000,
> > +	  .mask		= 0xff3f0000,
> > +	},
> > +	/* Die: LS1088A, SoC: LS1088A/LS1048A/LS1084A/LS1044A */
> > +	{ .die		= "LS1088A",
> > +	  .svr		= 0x87030000,
> > +	  .mask		= 0xff3f0000,
> > +	},
> > +	/* Die: LS1012A, SoC: LS1012A */
> > +	{ .die		= "LS1012A",
> > +	  .svr		= 0x87040000,
> > +	  .mask		= 0xffff0000,
> > +	},
> > +	/* Die: LS1046A, SoC: LS1046A/LS1026A */
> > +	{ .die		= "LS1046A",
> > +	  .svr		= 0x87070000,
> > +	  .mask		= 0xffff0000,
> > +	},
> > +	/* Die: LS2088A, SoC: LS2088A/LS2048A/LS2084A/LS2044A */
> > +	{ .die		= "LS2088A",
> > +	  .svr		= 0x87090000,
> > +	  .mask		= 0xff3f0000,
> > +	},
> > +	/* Die: LS1021A, SoC: LS1021A/LS1020A/LS1022A
> > +	 * Note: Put this die at the end in cause of incorrect
> > identification
> > +	 */
> > +	{ .die		= "LS1021A",
> > +	  .svr		= 0x87000000,
> > +	  .mask		= 0xfff00000,
> > +	},
> > +#endif /* CONFIG_ARCH_MXC || CONFIG_ARCH_LAYERSCAPE */
> 
> Instead of relying on ordering, add more bits to the mask so that there's
> no overlap.  I think 0xfff70000 would work.

[Lu Yangbo-B47093] Ok, Will do that. Then we add 3 bits of 'Various Personalities' field for ls1021a die identification.

> 
> > +out:
> > +	kfree(soc_dev_attr.machine);
> > +	kfree(soc_dev_attr.family);
> > +	kfree(soc_dev_attr.soc_id);
> > +	kfree(soc_dev_attr.revision);
> > +	iounmap(guts->regs);
> > +out_free:
> > +	kfree(guts);
> > +	return ret;
> > +}
> 
> Please use devm.

[Lu Yangbo-B47093] Sorry for forgetting this. Will do that and send out the new version soon.
Thanks for your comments.

> 
> -Scott