* [PATCH v3 0/3] ARM: aspeed: Add socinfo driver
@ 2020-09-21 9:16 Joel Stanley
2020-09-21 9:16 ` [PATCH v3 1/3] dt-bindings: aspeed: Add silicon id node to SCU Joel Stanley
` (2 more replies)
0 siblings, 3 replies; 7+ messages in thread
From: Joel Stanley @ 2020-09-21 9:16 UTC (permalink / raw)
To: Rob Herring, Andrew Jeffery; +Cc: linux-aspeed, linux-arm-kernel
This adds a socinfo driver for the ASPEED BMCs. Please review!
v3 removes some unncessary frees
v2 addresses Andrew's review comments
Joel Stanley (3):
dt-bindings: aspeed: Add silicon id node to SCU
soc: aspeed: Add soc info driver
ARM: dts: aspeed: Add silicon id node
.../devicetree/bindings/mfd/aspeed-scu.txt | 26 ++++
arch/arm/boot/dts/aspeed-g4.dtsi | 5 +
arch/arm/boot/dts/aspeed-g5.dtsi | 5 +
arch/arm/boot/dts/aspeed-g6.dtsi | 5 +
drivers/soc/aspeed/Kconfig | 7 +
drivers/soc/aspeed/Makefile | 1 +
drivers/soc/aspeed/aspeed-socinfo.c | 133 ++++++++++++++++++
7 files changed, 182 insertions(+)
create mode 100644 drivers/soc/aspeed/aspeed-socinfo.c
--
2.28.0
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^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v3 1/3] dt-bindings: aspeed: Add silicon id node to SCU
2020-09-21 9:16 [PATCH v3 0/3] ARM: aspeed: Add socinfo driver Joel Stanley
@ 2020-09-21 9:16 ` Joel Stanley
2020-09-24 6:46 ` Andrew Jeffery
2020-09-21 9:16 ` [PATCH v3 2/3] soc: aspeed: Add soc info driver Joel Stanley
2020-09-21 9:16 ` [PATCH v3 3/3] ARM: dts: aspeed: Add silicon id node Joel Stanley
2 siblings, 1 reply; 7+ messages in thread
From: Joel Stanley @ 2020-09-21 9:16 UTC (permalink / raw)
To: Rob Herring, Andrew Jeffery; +Cc: linux-aspeed, linux-arm-kernel
Different ASPEED families have various unique hardware silicon
identifiers within the SoC.
Signed-off-by: Joel Stanley <joel@jms.id.au>
---
v2:
- Fix 2500 string
- Be explicit about which ast2600 register to use
---
.../devicetree/bindings/mfd/aspeed-scu.txt | 26 +++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/Documentation/devicetree/bindings/mfd/aspeed-scu.txt b/Documentation/devicetree/bindings/mfd/aspeed-scu.txt
index 4d92c0bb6687..857ee33f7329 100644
--- a/Documentation/devicetree/bindings/mfd/aspeed-scu.txt
+++ b/Documentation/devicetree/bindings/mfd/aspeed-scu.txt
@@ -20,3 +20,29 @@ syscon: syscon@1e6e2000 {
#clock-cells = <1>;
#reset-cells = <1>;
};
+
+Silicon ID
+-----------------
+
+Families have unique hardware silicon identifiers within the SoC.
+
+Required properties:
+
+ - compatible: "aspeed,silicon-id" or:
+ "aspeed,ast2400-silicon-id" or
+ "aspeed,ast2500-silicon-id" or
+ "aspeed,ast2600-silicon-id"
+
+ - reg: offset and length of the silicon id information
+ optionally, a second offset and length describes the unique chip id
+
+ The reg should be the unique silicon id register, and
+ not backwards compatible one in eg. the 2600.
+
+Example:
+
+
+silicon-id@7c {
+ compatible = "aspeed,ast2500-silicon-id", "aspeed,silicon-id";
+ reg = <0x7c 0x4 0x150 0x8>;
+};
--
2.28.0
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^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v3 2/3] soc: aspeed: Add soc info driver
2020-09-21 9:16 [PATCH v3 0/3] ARM: aspeed: Add socinfo driver Joel Stanley
2020-09-21 9:16 ` [PATCH v3 1/3] dt-bindings: aspeed: Add silicon id node to SCU Joel Stanley
@ 2020-09-21 9:16 ` Joel Stanley
2020-09-24 6:56 ` Andrew Jeffery
2020-09-21 9:16 ` [PATCH v3 3/3] ARM: dts: aspeed: Add silicon id node Joel Stanley
2 siblings, 1 reply; 7+ messages in thread
From: Joel Stanley @ 2020-09-21 9:16 UTC (permalink / raw)
To: Rob Herring, Andrew Jeffery; +Cc: linux-aspeed, linux-arm-kernel
This adds a SOC_BUS info driver for the ASPEED platform.
The full ID table is preserved in this commit message in case someone
finds a need to change the implemntation in the future.
{ "AST1100-A0", 0x00000200 },
{ "AST1100-A1", 0x00000201 },
{ "AST1100-A2", 0x00000202 },
{ "AST1100-A3", 0x00000202 },
{ "AST2050-A0", 0x00000200 },
{ "AST2050-A1", 0x00000201 },
{ "AST2050-A2", 0x00000202 },
{ "AST2050-A3", 0x00000202 },
{ "AST2100-A0", 0x00000300 },
{ "AST2100-A1", 0x00000301 },
{ "AST2100-A2", 0x00000302 },
{ "AST2100-A3", 0x00000302 },
{ "AST2150-A0", 0x00000202 },
{ "AST2150-A1", 0x00000202 },
{ "AST2200-A0", 0x00000102 },
{ "AST2200-A1", 0x00000102 },
{ "AST2300-A0", 0x01000003 },
{ "AST2300-A1", 0x01010303 },
{ "AST1300-A1", 0x01010003 },
{ "AST1050-A1", 0x01010203 },
{ "AST2400-A0", 0x02000303 },
{ "AST2400-A1", 0x02010303 },
{ "AST1400-A1", 0x02010103 },
{ "AST1250-A1", 0x02010303 },
{ "AST2500-A0", 0x04000303 },
{ "AST2510-A0", 0x04000103 },
{ "AST2520-A0", 0x04000203 },
{ "AST2530-A0", 0x04000403 },
{ "AST2500-A1", 0x04010303 },
{ "AST2510-A1", 0x04010103 },
{ "AST2520-A1", 0x04010203 },
{ "AST2530-A1", 0x04010403 },
{ "AST2500-A2", 0x04030303 },
{ "AST2510-A2", 0x04030103 },
{ "AST2520-A2", 0x04030203 },
{ "AST2530-A2", 0x04030403 },
{ "AST2600-A0", 0x05000303 },
{ "AST2600-A1", 0x05010303 },
{ "AST2600-A2", 0x05020303 },
{ "AST2620-A1", 0x05010203 },
{ "AST2620-A2", 0x05020203 },
Signed-off-by: Joel Stanley <joel@jms.id.au>
---
v3:
- Remove unncessary frees
v2:
- Fix of_node_puts
- Skip kasprintf where it's not needed
---
drivers/soc/aspeed/Kconfig | 7 ++
drivers/soc/aspeed/Makefile | 1 +
drivers/soc/aspeed/aspeed-socinfo.c | 133 ++++++++++++++++++++++++++++
3 files changed, 141 insertions(+)
create mode 100644 drivers/soc/aspeed/aspeed-socinfo.c
diff --git a/drivers/soc/aspeed/Kconfig b/drivers/soc/aspeed/Kconfig
index 9ce252445605..7ece0675b1fa 100644
--- a/drivers/soc/aspeed/Kconfig
+++ b/drivers/soc/aspeed/Kconfig
@@ -31,6 +31,13 @@ config ASPEED_P2A_CTRL
driver also provides an interface for userspace mappings to a
pre-defined region.
+config ASPEED_SOCINFO
+ bool "ASPEED SoC Information driver"
+ default ARCH_ASPEED
+ select SOC_BUS
+ help
+ Say yes to support decoding of ASPEED BMC information.
+
endmenu
endif
diff --git a/drivers/soc/aspeed/Makefile b/drivers/soc/aspeed/Makefile
index b64be47f2b1f..fcab7192e1a4 100644
--- a/drivers/soc/aspeed/Makefile
+++ b/drivers/soc/aspeed/Makefile
@@ -2,3 +2,4 @@
obj-$(CONFIG_ASPEED_LPC_CTRL) += aspeed-lpc-ctrl.o
obj-$(CONFIG_ASPEED_LPC_SNOOP) += aspeed-lpc-snoop.o
obj-$(CONFIG_ASPEED_P2A_CTRL) += aspeed-p2a-ctrl.o
+obj-$(CONFIG_ASPEED_SOCINFO) += aspeed-socinfo.o
diff --git a/drivers/soc/aspeed/aspeed-socinfo.c b/drivers/soc/aspeed/aspeed-socinfo.c
new file mode 100644
index 000000000000..26db42ef6aae
--- /dev/null
+++ b/drivers/soc/aspeed/aspeed-socinfo.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Copyright 2019 IBM Corp. */
+
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/sys_soc.h>
+
+static struct {
+ const char *name;
+ const u32 id;
+} const rev_table[] = {
+ /* AST2400 */
+ { "AST2400", 0x02000303 },
+ { "AST1400", 0x02010103 },
+ { "AST1250", 0x02010303 },
+ /* AST2500 */
+ { "AST2500", 0x04000303 },
+ { "AST2510", 0x04000103 },
+ { "AST2520", 0x04000203 },
+ { "AST2530", 0x04000403 },
+ /* AST2600 */
+ { "AST2600", 0x05000303 },
+ { "AST2620", 0x05010203 },
+};
+
+static const char *siliconid_to_name(u32 siliconid)
+{
+ unsigned int id = siliconid & 0xff00ffff;
+ unsigned int i;
+
+ for (i = 0 ; i < ARRAY_SIZE(rev_table) ; ++i) {
+ if (rev_table[i].id == id)
+ return rev_table[i].name;
+ }
+
+ return "Unknown";
+}
+
+static const char *siliconid_to_rev(u32 siliconid)
+{
+ unsigned int rev = (siliconid >> 16) & 0xff;
+
+ switch (rev) {
+ case 0:
+ return "A0";
+ case 1:
+ return "A1";
+ case 3:
+ return "A2";
+ };
+
+ return "??";
+}
+
+static int __init aspeed_socinfo_init(void)
+{
+ struct soc_device_attribute *attrs;
+ struct soc_device *soc_dev;
+ struct device_node *np;
+ void __iomem *reg;
+ bool has_chipid = false;
+ u32 siliconid;
+ u32 chipid[2];
+ const char *machine = NULL;
+
+ np = of_find_compatible_node(NULL, NULL, "aspeed,silicon-id");
+ if (!of_device_is_available(np)) {
+ of_node_put(np);
+ return -ENODEV;
+ }
+
+ reg = of_iomap(np, 0);
+ if (!reg)
+ return -ENODEV;
+ siliconid = readl(reg);
+ iounmap(reg);
+
+ /* This is optional, the ast2400 does not have it */
+ reg = of_iomap(np, 1);
+ if (reg) {
+ has_chipid = true;
+ chipid[0] = readl(reg);
+ chipid[1] = readl(reg + 4);
+ iounmap(reg);
+ }
+ of_node_put(np);
+
+ attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
+ if (!attrs)
+ return -ENODEV;
+
+ /*
+ * Machine: Romulus BMC
+ * Family: AST2500
+ * Revision: A1
+ * SoC ID: raw silicon revision id
+ * Serial Number: 64-bit chipid
+ */
+
+ np = of_find_node_by_path("/");
+ of_property_read_string(np, "model", &machine);
+ if (machine)
+ attrs->machine = kstrdup(machine, GFP_KERNEL);
+ of_node_put(np);
+
+ attrs->family = siliconid_to_name(siliconid);
+ attrs->revision = siliconid_to_rev(siliconid);
+ attrs->soc_id = kasprintf(GFP_KERNEL, "%08x", siliconid);
+
+ if (has_chipid)
+ attrs->serial_number = kasprintf(GFP_KERNEL, "%08x%08x",
+ chipid[1], chipid[0]);
+
+ soc_dev = soc_device_register(attrs);
+ if (IS_ERR(soc_dev)) {
+ kfree(attrs->soc_id);
+ kfree(attrs->serial_number);
+ kfree(attrs);
+ return PTR_ERR(soc_dev);
+ }
+
+ pr_info("ASPEED %s rev %s (%s)\n",
+ attrs->family,
+ attrs->revision,
+ attrs->soc_id);
+
+ return 0;
+}
+early_initcall(aspeed_socinfo_init);
--
2.28.0
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^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v3 3/3] ARM: dts: aspeed: Add silicon id node
2020-09-21 9:16 [PATCH v3 0/3] ARM: aspeed: Add socinfo driver Joel Stanley
2020-09-21 9:16 ` [PATCH v3 1/3] dt-bindings: aspeed: Add silicon id node to SCU Joel Stanley
2020-09-21 9:16 ` [PATCH v3 2/3] soc: aspeed: Add soc info driver Joel Stanley
@ 2020-09-21 9:16 ` Joel Stanley
2020-09-24 6:57 ` Andrew Jeffery
2 siblings, 1 reply; 7+ messages in thread
From: Joel Stanley @ 2020-09-21 9:16 UTC (permalink / raw)
To: Rob Herring, Andrew Jeffery; +Cc: linux-aspeed, linux-arm-kernel
This register describes the silicon id and chip unique id. It varies
between CPU revisions, but is always part of the SCU.
Signed-off-by: Joel Stanley <joel@jms.id.au>
---
v2: Fix whitespace
---
arch/arm/boot/dts/aspeed-g4.dtsi | 5 +++++
arch/arm/boot/dts/aspeed-g5.dtsi | 5 +++++
arch/arm/boot/dts/aspeed-g6.dtsi | 5 +++++
3 files changed, 15 insertions(+)
diff --git a/arch/arm/boot/dts/aspeed-g4.dtsi b/arch/arm/boot/dts/aspeed-g4.dtsi
index 82f0213e3a3c..b3dafbc8caca 100644
--- a/arch/arm/boot/dts/aspeed-g4.dtsi
+++ b/arch/arm/boot/dts/aspeed-g4.dtsi
@@ -192,6 +192,11 @@ p2a: p2a-control@2c {
status = "disabled";
};
+ silicon-id@7c {
+ compatible = "aspeed,ast2400-silicon-id", "aspeed,silicon-id";
+ reg = <0x7c 0x4>;
+ };
+
pinctrl: pinctrl@80 {
reg = <0x80 0x18>, <0xa0 0x10>;
compatible = "aspeed,ast2400-pinctrl";
diff --git a/arch/arm/boot/dts/aspeed-g5.dtsi b/arch/arm/boot/dts/aspeed-g5.dtsi
index 9c91afb2b404..c6862182313a 100644
--- a/arch/arm/boot/dts/aspeed-g5.dtsi
+++ b/arch/arm/boot/dts/aspeed-g5.dtsi
@@ -239,6 +239,11 @@ p2a: p2a-control@2c {
status = "disabled";
};
+ silicon-id@7c {
+ compatible = "aspeed,ast2500-silicon-id", "aspeed,silicon-id";
+ reg = <0x7c 0x4 0x150 0x8>;
+ };
+
pinctrl: pinctrl@80 {
compatible = "aspeed,ast2500-pinctrl";
reg = <0x80 0x18>, <0xa0 0x10>;
diff --git a/arch/arm/boot/dts/aspeed-g6.dtsi b/arch/arm/boot/dts/aspeed-g6.dtsi
index b58220a49cbd..1ce3a1f06f7f 100644
--- a/arch/arm/boot/dts/aspeed-g6.dtsi
+++ b/arch/arm/boot/dts/aspeed-g6.dtsi
@@ -311,6 +311,11 @@ pinctrl: pinctrl {
compatible = "aspeed,ast2600-pinctrl";
};
+ silicon-id@14 {
+ compatible = "aspeed,ast2600-silicon-id", "aspeed,silicon-id";
+ reg = <0x14 0x4 0x5b0 0x8>;
+ };
+
smp-memram@180 {
compatible = "aspeed,ast2600-smpmem";
reg = <0x180 0x40>;
--
2.28.0
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^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH v3 1/3] dt-bindings: aspeed: Add silicon id node to SCU
2020-09-21 9:16 ` [PATCH v3 1/3] dt-bindings: aspeed: Add silicon id node to SCU Joel Stanley
@ 2020-09-24 6:46 ` Andrew Jeffery
0 siblings, 0 replies; 7+ messages in thread
From: Andrew Jeffery @ 2020-09-24 6:46 UTC (permalink / raw)
To: Joel Stanley, Rob Herring; +Cc: linux-aspeed, linux-arm-kernel
On Mon, 21 Sep 2020, at 18:46, Joel Stanley wrote:
> Different ASPEED families have various unique hardware silicon
> identifiers within the SoC.
>
> Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
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^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v3 2/3] soc: aspeed: Add soc info driver
2020-09-21 9:16 ` [PATCH v3 2/3] soc: aspeed: Add soc info driver Joel Stanley
@ 2020-09-24 6:56 ` Andrew Jeffery
0 siblings, 0 replies; 7+ messages in thread
From: Andrew Jeffery @ 2020-09-24 6:56 UTC (permalink / raw)
To: Joel Stanley, Rob Herring; +Cc: linux-aspeed, linux-arm-kernel
On Mon, 21 Sep 2020, at 18:46, Joel Stanley wrote:
> This adds a SOC_BUS info driver for the ASPEED platform.
>
> The full ID table is preserved in this commit message in case someone
> finds a need to change the implemntation in the future.
>
> { "AST1100-A0", 0x00000200 },
> { "AST1100-A1", 0x00000201 },
> { "AST1100-A2", 0x00000202 },
> { "AST1100-A3", 0x00000202 },
>
> { "AST2050-A0", 0x00000200 },
> { "AST2050-A1", 0x00000201 },
> { "AST2050-A2", 0x00000202 },
> { "AST2050-A3", 0x00000202 },
>
> { "AST2100-A0", 0x00000300 },
> { "AST2100-A1", 0x00000301 },
> { "AST2100-A2", 0x00000302 },
> { "AST2100-A3", 0x00000302 },
>
> { "AST2150-A0", 0x00000202 },
> { "AST2150-A1", 0x00000202 },
>
> { "AST2200-A0", 0x00000102 },
> { "AST2200-A1", 0x00000102 },
>
> { "AST2300-A0", 0x01000003 },
> { "AST2300-A1", 0x01010303 },
>
> { "AST1300-A1", 0x01010003 },
> { "AST1050-A1", 0x01010203 },
>
> { "AST2400-A0", 0x02000303 },
> { "AST2400-A1", 0x02010303 },
> { "AST1400-A1", 0x02010103 },
> { "AST1250-A1", 0x02010303 },
>
> { "AST2500-A0", 0x04000303 },
> { "AST2510-A0", 0x04000103 },
> { "AST2520-A0", 0x04000203 },
> { "AST2530-A0", 0x04000403 },
> { "AST2500-A1", 0x04010303 },
> { "AST2510-A1", 0x04010103 },
> { "AST2520-A1", 0x04010203 },
> { "AST2530-A1", 0x04010403 },
> { "AST2500-A2", 0x04030303 },
> { "AST2510-A2", 0x04030103 },
> { "AST2520-A2", 0x04030203 },
> { "AST2530-A2", 0x04030403 },
>
> { "AST2600-A0", 0x05000303 },
> { "AST2600-A1", 0x05010303 },
> { "AST2600-A2", 0x05020303 },
> { "AST2620-A1", 0x05010203 },
> { "AST2620-A2", 0x05020203 },
>
> Signed-off-by: Joel Stanley <joel@jms.id.au>
I didn't rigorously check the list above, but it looks reasonable at a glance.
The code looks good to me this time, so:
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
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^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v3 3/3] ARM: dts: aspeed: Add silicon id node
2020-09-21 9:16 ` [PATCH v3 3/3] ARM: dts: aspeed: Add silicon id node Joel Stanley
@ 2020-09-24 6:57 ` Andrew Jeffery
0 siblings, 0 replies; 7+ messages in thread
From: Andrew Jeffery @ 2020-09-24 6:57 UTC (permalink / raw)
To: Joel Stanley, Rob Herring; +Cc: linux-aspeed, linux-arm-kernel
On Mon, 21 Sep 2020, at 18:46, Joel Stanley wrote:
> This register describes the silicon id and chip unique id. It varies
> between CPU revisions, but is always part of the SCU.
>
> Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
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^ permalink raw reply [flat|nested] 7+ messages in thread
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2020-09-21 9:16 [PATCH v3 0/3] ARM: aspeed: Add socinfo driver Joel Stanley
2020-09-21 9:16 ` [PATCH v3 1/3] dt-bindings: aspeed: Add silicon id node to SCU Joel Stanley
2020-09-24 6:46 ` Andrew Jeffery
2020-09-21 9:16 ` [PATCH v3 2/3] soc: aspeed: Add soc info driver Joel Stanley
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