[PATCH v9 0/3] Add board support for TS-4800

[PATCH v9 0/3] Add board support for TS-4800

[Damien Riegel]

This patch serie adds support for TS-4800 board. This board,                                                                              
manufactured by Technologic Systems, is based on an IMX515.

The first stage bootloader, called TS-BOOTROM, enables the watchdog,
so a watchdog driver is required to prevent board from rebooting. It is
handled in a separate patchset.

The current device tree is minimal but it allows to get a shell on the
board.

Changes in v9:
 - Changed dts file license to X11/GPL
 - Reordered i2c2 node to be alphabetically sorted
 - Dropped container node in iomuxc

Changes in v8:
 - Split the serie into two parts, watchdog and dts, because there are
   no build dependencies between the two, and the syscon patch has been
   separately applied in Lee Jones' tree.
 - As a consequence, I dropped the patch which enabled the watchdog in
   imx_v6_v7_defconfig to ease the integration.

Changes in v7:
 - syscon: change bus-width DT property to reg-io-width
 - watchdog: add dependency on HAS_IOMEM (spotted by a 0-day build) 

Changes in v6:
 - vendor prefix: reorder to sort alphabetically (wrong order since v3)
 - split commit adding device tree into two patches: one for the doc, one for
   the bindings

Changes in v5:
 - watchdog: changed iteration stop condition in set_timeout to be less
   error prone

Changes in v4:
 - syscon: rewrite DT property reading to be clearer
 - watchdog: made fixes suggested by Guenter (now uses
   watchdog_init_timeout, u32 instead of u16, fixed error checking in
   probe, cleaned set_timeout)

Changes in v3:
 - Rebased on v4.3
 - Changed vendor prefix from "ts" to "technologic"
 - Added a DT option to generic syscon driver to allow regmap configuration
 - Dropped custom mfd driver, use generic syscon driver instead.

Changes in v2:
 - Added a mfd driver to handle syscon registers
 - The watchdog driver now uses the regmap (created by the mfd driver)
   to access the feed register
 - Remove watchdog's dependency on SOC_IMX51

Damien Riegel (3):
  of: add vendor prefix for Technologic Systems
  of: documentation: add bindings documentation for TS-4800
  ARM: dts: TS-4800: add basic device tree

 .../devicetree/bindings/arm/technologic.txt        |   6 +
 .../devicetree/bindings/vendor-prefixes.txt        |   1 +
 arch/arm/boot/dts/Makefile                         |   3 +-
 arch/arm/boot/dts/imx51-ts4800.dts                 | 180 +++++++++++++++++++++
 4 files changed, 189 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/arm/technologic.txt
 create mode 100644 arch/arm/boot/dts/imx51-ts4800.dts

-- 
2.5.0

[PATCH v9 1/3] of: add vendor prefix for Technologic Systems

[Damien Riegel]

Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/vendor-prefixes.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 82d2ac9..d3a206d 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -215,6 +215,7 @@ stericsson	ST-Ericsson
 synology	Synology, Inc.
 tbs	TBS Technologies
 tcl	Toby Churchill Ltd.
+technologic	Technologic Systems
 thine	THine Electronics, Inc.
 ti	Texas Instruments
 tlm	Trusted Logic Mobility
-- 
2.5.0

[PATCH v9 2/3] of: documentation: add bindings documentation for TS-4800

[Damien Riegel]

This adds the documentation for the TS-4800 by Technologic Systems.

Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com>
Acked-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/arm/technologic.txt | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/technologic.txt

diff --git a/Documentation/devicetree/bindings/arm/technologic.txt b/Documentation/devicetree/bindings/arm/technologic.txt
new file mode 100644
index 0000000..8422988
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/technologic.txt
@@ -0,0 +1,6 @@
+Technologic Systems Platforms Device Tree Bindings
+--------------------------------------------------
+
+TS-4800 board
+Required root node properties:
+	- compatible = "technologic,imx51-ts4800", "fsl,imx51";
-- 
2.5.0

[PATCH v9 3/3] ARM: dts: TS-4800: add basic device tree

[Damien Riegel]

This device tree adds support for TS-4800 by Technologic Systems. This
board is based on MX51-babbage, but there are some subtle differences in
the pins used, and there is an additional FPGA that is memory-mapped.

More details here:
  http://wiki.embeddedarm.com/wiki/TS-4800

Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com>
---
 arch/arm/boot/dts/Makefile         |   3 +-
 arch/arm/boot/dts/imx51-ts4800.dts | 180 +++++++++++++++++++++++++++++++++++++
 2 files changed, 182 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm/boot/dts/imx51-ts4800.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index bb8fa02..41b9985 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -258,7 +258,8 @@ dtb-$(CONFIG_SOC_IMX51) += \
 	imx51-apf51dev.dtb \
 	imx51-babbage.dtb \
 	imx51-digi-connectcore-jsk.dtb \
-	imx51-eukrea-mbimxsd51-baseboard.dtb
+	imx51-eukrea-mbimxsd51-baseboard.dtb \
+	imx51-ts4800.dtb
 dtb-$(CONFIG_SOC_IMX53) += \
 	imx53-ard.dtb \
 	imx53-m53evk.dtb \
diff --git a/arch/arm/boot/dts/imx51-ts4800.dts b/arch/arm/boot/dts/imx51-ts4800.dts
new file mode 100644
index 0000000..f1317f7
--- /dev/null
+++ b/arch/arm/boot/dts/imx51-ts4800.dts
@@ -0,0 +1,180 @@
+/*
+ * Copyright 2015 Savoir-faire Linux
+ *
+ * This device tree is based on imx51-babbage.dts
+ *
+ * Licensed under the X11 license or the GPL v2 (or later)
+ */
+
+/dts-v1/;
+#include "imx51.dtsi"
+
+/ {
+	model = "Technologic Systems TS-4800";
+	compatible = "technologic,imx51-ts4800", "fsl,imx51";
+
+	chosen {
+		stdout-path = &uart1;
+	};
+
+	memory {
+		reg = <0x90000000 0x10000000>;
+	};
+
+	soc {
+		fpga {
+			compatible = "simple-bus";
+			reg = <0xb0000000 0x1d000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+
+			syscon: syscon@b0010000 {
+				compatible = "syscon", "simple-mfd";
+				reg = <0xb0010000 0x3d>;
+				reg-io-width = <2>;
+
+				wdt@e {
+					compatible = "technologic,ts4800-wdt";
+					syscon = <&syscon 0xe>;
+				};
+			};
+		};
+	};
+
+	clocks {
+		ckih1 {
+			clock-frequency = <22579200>;
+		};
+
+		ckih2 {
+			clock-frequency = <24576000>;
+		};
+	};
+};
+
+&esdhc1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_esdhc1>;
+	cd-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>;
+	wp-gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>;
+	status = "okay";
+};
+
+&fec {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_fec>;
+	phy-mode = "mii";
+	phy-reset-gpios = <&gpio2 14 GPIO_ACTIVE_LOW>;
+	phy-reset-duration = <1>;
+	status = "okay";
+};
+
+&i2c2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c2>;
+	status = "okay";
+
+	rtc: m41t00@68 {
+		compatible = "stm,m41t00";
+		reg = <0x68>;
+	};
+};
+
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart1>;
+	status = "okay";
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart2>;
+	status = "okay";
+};
+
+&uart3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart3>;
+	status = "okay";
+};
+
+&iomuxc {
+	pinctrl_ecspi1: ecspi1grp {
+		fsl,pins = <
+			MX51_PAD_CSPI1_MISO__ECSPI1_MISO	0x185
+			MX51_PAD_CSPI1_MOSI__ECSPI1_MOSI	0x185
+			MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK	0x185
+			MX51_PAD_CSPI1_SS0__GPIO4_24		0x85 /* CS0 */
+		>;
+	};
+
+	pinctrl_esdhc1: esdhc1grp {
+		fsl,pins = <
+			MX51_PAD_SD1_CMD__SD1_CMD		0x400020d5
+			MX51_PAD_SD1_CLK__SD1_CLK		0x20d5
+			MX51_PAD_SD1_DATA0__SD1_DATA0		0x20d5
+			MX51_PAD_SD1_DATA1__SD1_DATA1		0x20d5
+			MX51_PAD_SD1_DATA2__SD1_DATA2		0x20d5
+			MX51_PAD_SD1_DATA3__SD1_DATA3		0x20d5
+			MX51_PAD_GPIO1_0__GPIO1_0		0x100
+			MX51_PAD_GPIO1_1__GPIO1_1		0x100
+		>;
+	};
+
+	pinctrl_fec: fecgrp {
+		fsl,pins = <
+			MX51_PAD_EIM_EB2__FEC_MDIO		0x000001f5
+			MX51_PAD_EIM_EB3__FEC_RDATA1		0x00000085
+			MX51_PAD_EIM_CS2__FEC_RDATA2		0x00000085
+			MX51_PAD_EIM_CS3__FEC_RDATA3		0x00000085
+			MX51_PAD_EIM_CS4__FEC_RX_ER		0x00000180
+			MX51_PAD_EIM_CS5__FEC_CRS		0x00000180
+			MX51_PAD_DISP2_DAT10__FEC_COL		0x00000180
+			MX51_PAD_DISP2_DAT11__FEC_RX_CLK	0x00000180
+			MX51_PAD_DISP2_DAT14__FEC_RDATA0	0x00002180
+			MX51_PAD_DISP2_DAT15__FEC_TDATA0	0x00002004
+			MX51_PAD_NANDF_CS2__FEC_TX_ER		0x00002004
+			MX51_PAD_DI2_PIN2__FEC_MDC		0x00002004
+			MX51_PAD_DISP2_DAT6__FEC_TDATA1		0x00002004
+			MX51_PAD_DISP2_DAT7__FEC_TDATA2		0x00002004
+			MX51_PAD_DISP2_DAT8__FEC_TDATA3		0x00002004
+			MX51_PAD_DISP2_DAT9__FEC_TX_EN		0x00002004
+			MX51_PAD_DISP2_DAT13__FEC_TX_CLK	0x00002180
+			MX51_PAD_DISP2_DAT12__FEC_RX_DV		0x000020a4
+			MX51_PAD_EIM_A20__GPIO2_14		0x00000085 /* Phy Reset */
+		>;
+	};
+
+	pinctrl_i2c2: i2c2grp {
+		fsl,pins = <
+			MX51_PAD_KEY_COL4__I2C2_SCL		0x400001ed
+			MX51_PAD_KEY_COL5__I2C2_SDA		0x400001ed
+		>;
+	};
+
+	pinctrl_uart1: uart1grp {
+		fsl,pins = <
+			MX51_PAD_UART1_RXD__UART1_RXD		0x1c5
+			MX51_PAD_UART1_TXD__UART1_TXD		0x1c5
+			MX51_PAD_UART1_RTS__UART1_RTS		0x1c5
+			MX51_PAD_UART1_CTS__UART1_CTS		0x1c5
+		>;
+	};
+
+	pinctrl_uart2: uart2grp {
+		fsl,pins = <
+			MX51_PAD_UART2_RXD__UART2_RXD		0x1c5
+			MX51_PAD_UART2_TXD__UART2_TXD		0x1c5
+		>;
+	};
+
+	pinctrl_uart3: uart3grp {
+		fsl,pins = <
+			MX51_PAD_EIM_D25__UART3_RXD		0x1c5
+			MX51_PAD_EIM_D26__UART3_TXD		0x1c5
+			MX51_PAD_EIM_D27__UART3_RTS		0x1c5
+			MX51_PAD_EIM_D24__UART3_CTS		0x1c5
+		>;
+	};
+};
-- 
2.5.0

Re: [PATCH v9 0/3] Add board support for TS-4800

[Shawn Guo]

On Fri, Dec 11, 2015 at 12:08:11PM -0500, Damien Riegel wrote:
> Damien Riegel (3):
>   of: add vendor prefix for Technologic Systems
>   of: documentation: add bindings documentation for TS-4800
>   ARM: dts: TS-4800: add basic device tree

Applied all, thanks.