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[PATCH v3] soc: imx: Add SoC device register for i.MX9

alice.guo@oss.nxp.com posted 1 patch 1 year, 3 months ago
There is a newer version of this series
drivers/soc/imx/Makefile   |   2 +-
drivers/soc/imx/soc-imx9.c | 106 +++++++++++++++++++++++++++++++++++++
2 files changed, 107 insertions(+), 1 deletion(-)
create mode 100644 drivers/soc/imx/soc-imx9.c
[PATCH v3] soc: imx: Add SoC device register for i.MX9
Posted by alice.guo@oss.nxp.com 1 year, 3 months ago 
From: "alice.guo" <alice.guo@nxp.com>

i.MX9 SoCs have SoC ID, SoC revision number and chip unique identifier
which are provided by the corresponding ARM trusted firmware API. This
patch intends to use SMC call to obtain these information and then
register i.MX9 SoC as a device.

Signed-off-by: alice.guo <alice.guo@nxp.com>
---

Changes for v2:
 - refine error log print
Changes for v3:
 - return -EINVAL when arm_smccc_smc failed
 - fix the build warning caused by pr_err("%s: SMC failed: %d\n", __func__, res.a0);
 - drop the pr_err in imx9_soc_init
 - free the memory in the reverse order of allocation
 - use of_match_node instead of of_machine_is_compatible

 drivers/soc/imx/Makefile   |   2 +-
 drivers/soc/imx/soc-imx9.c | 106 +++++++++++++++++++++++++++++++++++++
 2 files changed, 107 insertions(+), 1 deletion(-)
 create mode 100644 drivers/soc/imx/soc-imx9.c

diff --git a/drivers/soc/imx/Makefile b/drivers/soc/imx/Makefile
index 3ad321ca608a..ca6a5fa1618f 100644
--- a/drivers/soc/imx/Makefile
+++ b/drivers/soc/imx/Makefile
@@ -3,4 +3,4 @@ ifeq ($(CONFIG_ARM),y)
 obj-$(CONFIG_ARCH_MXC) += soc-imx.o
 endif
 obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o
-obj-$(CONFIG_SOC_IMX9) += imx93-src.o
+obj-$(CONFIG_SOC_IMX9) += imx93-src.o soc-imx9.o
diff --git a/drivers/soc/imx/soc-imx9.c b/drivers/soc/imx/soc-imx9.c
new file mode 100644
index 000000000000..823395584533
--- /dev/null
+++ b/drivers/soc/imx/soc-imx9.c
@@ -0,0 +1,106 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2024 NXP
+ */
+
+#include <linux/arm-smccc.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+#include <linux/sys_soc.h>
+
+#define IMX_SIP_GET_SOC_INFO	0xc2000006
+#define SOC_ID(x)		(((x) & 0xFFFF) >> 8)
+#define SOC_REV_MAJOR(x)	((((x) >> 28) & 0xF) - 0x9)
+#define SOC_REV_MINOR(x)	(((x) >> 24) & 0xF)
+
+static int imx9_soc_device_register(void)
+{
+	struct soc_device_attribute *attr;
+	struct arm_smccc_res res;
+	struct soc_device *sdev;
+	u32 soc_id, rev_major, rev_minor;
+	u64 uid127_64, uid63_0;
+	int err;
+
+	attr = kzalloc(sizeof(*attr), GFP_KERNEL);
+	if (!attr)
+		return -ENOMEM;
+
+	err = of_property_read_string(of_root, "model", &attr->machine);
+	if (err) {
+		pr_err("%s: missing model property: %d\n", __func__, err);
+		goto attr;
+	}
+
+	attr->family = kasprintf(GFP_KERNEL, "Freescale i.MX");
+
+	/*
+	 * Retrieve the soc id, rev & uid info:
+	 * res.a1[31:16]: soc revision;
+	 * res.a1[15:0]: soc id;
+	 * res.a2: uid[127:64];
+	 * res.a3: uid[63:0];
+	 */
+	arm_smccc_smc(IMX_SIP_GET_SOC_INFO, 0, 0, 0, 0, 0, 0, 0, &res);
+	if (res.a0 != SMCCC_RET_SUCCESS) {
+		pr_err("%s: SMC failed: 0x%lx\n", __func__, res.a0);
+		err = -EINVAL;
+		goto family;
+	}
+
+	soc_id = SOC_ID(res.a1);
+	rev_major = SOC_REV_MAJOR(res.a1);
+	rev_minor = SOC_REV_MINOR(res.a1);
+
+	attr->soc_id = kasprintf(GFP_KERNEL, "i.MX%2x", soc_id);
+	attr->revision = kasprintf(GFP_KERNEL, "%d.%d", rev_major, rev_minor);
+
+	uid127_64 = res.a2;
+	uid63_0 = res.a3;
+	attr->serial_number = kasprintf(GFP_KERNEL, "%016llx%016llx", uid127_64, uid63_0);
+
+	sdev = soc_device_register(attr);
+	if (IS_ERR(sdev)) {
+		err = PTR_ERR(sdev);
+		pr_err("%s failed to register SoC as a device: %d\n", __func__, err);
+		goto serial_number;
+	}
+
+	return 0;
+
+serial_number:
+	kfree(attr->serial_number);
+	kfree(attr->revision);
+	kfree(attr->soc_id);
+family:
+	kfree(attr->family);
+attr:
+	kfree(attr);
+	return err;
+}
+
+static const struct of_device_id imx9_soc_match[] = {
+	{ .compatible = "fsl,imx93", },
+	{ .compatible = "fsl,imx95", },
+	{ }
+};
+
+static int __init imx9_soc_init(void)
+{
+	int ret;
+
+	/* No match means it is not an i.MX 9 series SoC, do nothing. */
+	if (!of_match_node(imx9_soc_match, of_root))
+		return 0;
+
+	ret = imx9_soc_device_register();
+
+	return ret;
+}
+device_initcall(imx9_soc_init);
+
+MODULE_AUTHOR("NXP");
+MODULE_DESCRIPTION("NXP i.MX9 SoC");
+MODULE_LICENSE("GPL");
-- 
2.34.1
Re: [PATCH v3] soc: imx: Add SoC device register for i.MX9
Posted by kernel test robot 1 year, 3 months ago 
Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on shawnguo/for-next]
[also build test WARNING on linus/master v6.12-rc5 next-20241030]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/alice-guo-oss-nxp-com/soc-imx-Add-SoC-device-register-for-i-MX9/20241030-171525
base:   https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git for-next
patch link:    https://lore.kernel.org/r/20241030091336.3901440-1-alice.guo%40oss.nxp.com
patch subject: [PATCH v3] soc: imx: Add SoC device register for i.MX9
config: hexagon-randconfig-001-20241031 (https://download.01.org/0day-ci/archive/20241031/202410311056.PBPPOYmg-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241031/202410311056.PBPPOYmg-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410311056.PBPPOYmg-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/soc/imx/soc-imx9.c:84:34: warning: unused variable 'imx9_soc_match' [-Wunused-const-variable]
   static const struct of_device_id imx9_soc_match[] = {
                                    ^
   1 warning generated.


vim +/imx9_soc_match +84 drivers/soc/imx/soc-imx9.c

    83	
  > 84	static const struct of_device_id imx9_soc_match[] = {
    85		{ .compatible = "fsl,imx93", },
    86		{ .compatible = "fsl,imx95", },
    87		{ }
    88	};
    89	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Re: [PATCH v3] soc: imx: Add SoC device register for i.MX9
Posted by kernel test robot 1 year, 3 months ago 
Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on shawnguo/for-next]
[also build test WARNING on linus/master v6.12-rc5 next-20241030]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/alice-guo-oss-nxp-com/soc-imx-Add-SoC-device-register-for-i-MX9/20241030-171525
base:   https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git for-next
patch link:    https://lore.kernel.org/r/20241030091336.3901440-1-alice.guo%40oss.nxp.com
patch subject: [PATCH v3] soc: imx: Add SoC device register for i.MX9
config: x86_64-buildonly-randconfig-002-20241030 (https://download.01.org/0day-ci/archive/20241031/202410310126.WFKQ7LtM-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241031/202410310126.WFKQ7LtM-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410310126.WFKQ7LtM-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/soc/imx/soc-imx9.c:84:34: warning: 'imx9_soc_match' defined but not used [-Wunused-const-variable=]
      84 | static const struct of_device_id imx9_soc_match[] = {
         |                                  ^~~~~~~~~~~~~~


vim +/imx9_soc_match +84 drivers/soc/imx/soc-imx9.c

    83	
  > 84	static const struct of_device_id imx9_soc_match[] = {
    85		{ .compatible = "fsl,imx93", },
    86		{ .compatible = "fsl,imx95", },
    87		{ }
    88	};
    89	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Re: [PATCH v3] soc: imx: Add SoC device register for i.MX9
Posted by Stefan Wahren 1 year, 3 months ago 
Am 30.10.24 um 10:13 schrieb alice.guo@oss.nxp.com:
> From: "alice.guo" <alice.guo@nxp.com>
>
> i.MX9 SoCs have SoC ID, SoC revision number and chip unique identifier
> which are provided by the corresponding ARM trusted firmware API. This
> patch intends to use SMC call to obtain these information and then
> register i.MX9 SoC as a device.
>
> Signed-off-by: alice.guo <alice.guo@nxp.com>
Reviewed-by: Stefan Wahren <wahrenst@gmx.net>
Re: [PATCH v3] soc: imx: Add SoC device register for i.MX9
Posted by Stefan Wahren 1 year, 3 months ago 
Hi Alice,

Am 30.10.24 um 10:13 schrieb alice.guo@oss.nxp.com:
> From: "alice.guo" <alice.guo@nxp.com>
>
> i.MX9 SoCs have SoC ID, SoC revision number and chip unique identifier
> which are provided by the corresponding ARM trusted firmware API. This
> patch intends to use SMC call to obtain these information and then
> register i.MX9 SoC as a device.
>
> Signed-off-by: alice.guo <alice.guo@nxp.com>
> ---
>
> Changes for v2:
>   - refine error log print
> Changes for v3:
>   - return -EINVAL when arm_smccc_smc failed
>   - fix the build warning caused by pr_err("%s: SMC failed: %d\n", __func__, res.a0);
>   - drop the pr_err in imx9_soc_init
>   - free the memory in the reverse order of allocation
>   - use of_match_node instead of of_machine_is_compatible
>
>   drivers/soc/imx/Makefile   |   2 +-
>   drivers/soc/imx/soc-imx9.c | 106 +++++++++++++++++++++++++++++++++++++
>   2 files changed, 107 insertions(+), 1 deletion(-)
>   create mode 100644 drivers/soc/imx/soc-imx9.c
>
> diff --git a/drivers/soc/imx/Makefile b/drivers/soc/imx/Makefile
> index 3ad321ca608a..ca6a5fa1618f 100644
> --- a/drivers/soc/imx/Makefile
> +++ b/drivers/soc/imx/Makefile
> @@ -3,4 +3,4 @@ ifeq ($(CONFIG_ARM),y)
>   obj-$(CONFIG_ARCH_MXC) += soc-imx.o
>   endif
>   obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o
> -obj-$(CONFIG_SOC_IMX9) += imx93-src.o
> +obj-$(CONFIG_SOC_IMX9) += imx93-src.o soc-imx9.o
> diff --git a/drivers/soc/imx/soc-imx9.c b/drivers/soc/imx/soc-imx9.c
> new file mode 100644
> index 000000000000..823395584533
> --- /dev/null
> +++ b/drivers/soc/imx/soc-imx9.c
> @@ -0,0 +1,106 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright 2024 NXP
> + */
> +
> +#include <linux/arm-smccc.h>
> +#include <linux/init.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/slab.h>
> +#include <linux/sys_soc.h>
> +
> +#define IMX_SIP_GET_SOC_INFO	0xc2000006
> +#define SOC_ID(x)		(((x) & 0xFFFF) >> 8)
> +#define SOC_REV_MAJOR(x)	((((x) >> 28) & 0xF) - 0x9)
> +#define SOC_REV_MINOR(x)	(((x) >> 24) & 0xF)
> +
> +static int imx9_soc_device_register(void)
> +{
> +	struct soc_device_attribute *attr;
> +	struct arm_smccc_res res;
> +	struct soc_device *sdev;
> +	u32 soc_id, rev_major, rev_minor;
> +	u64 uid127_64, uid63_0;
> +	int err;
> +
> +	attr = kzalloc(sizeof(*attr), GFP_KERNEL);
> +	if (!attr)
> +		return -ENOMEM;
> +
> +	err = of_property_read_string(of_root, "model", &attr->machine);
> +	if (err) {
> +		pr_err("%s: missing model property: %d\n", __func__, err);
> +		goto attr;
> +	}
> +
> +	attr->family = kasprintf(GFP_KERNEL, "Freescale i.MX");
> +
> +	/*
> +	 * Retrieve the soc id, rev & uid info:
> +	 * res.a1[31:16]: soc revision;
> +	 * res.a1[15:0]: soc id;
> +	 * res.a2: uid[127:64];
> +	 * res.a3: uid[63:0];
> +	 */
> +	arm_smccc_smc(IMX_SIP_GET_SOC_INFO, 0, 0, 0, 0, 0, 0, 0, &res);
> +	if (res.a0 != SMCCC_RET_SUCCESS) {
> +		pr_err("%s: SMC failed: 0x%lx\n", __func__, res.a0);
> +		err = -EINVAL;
> +		goto family;
> +	}
> +
> +	soc_id = SOC_ID(res.a1);
> +	rev_major = SOC_REV_MAJOR(res.a1);
> +	rev_minor = SOC_REV_MINOR(res.a1);
> +
> +	attr->soc_id = kasprintf(GFP_KERNEL, "i.MX%2x", soc_id);
> +	attr->revision = kasprintf(GFP_KERNEL, "%d.%d", rev_major, rev_minor);
> +
> +	uid127_64 = res.a2;
> +	uid63_0 = res.a3;
> +	attr->serial_number = kasprintf(GFP_KERNEL, "%016llx%016llx", uid127_64, uid63_0);
> +
> +	sdev = soc_device_register(attr);
> +	if (IS_ERR(sdev)) {
> +		err = PTR_ERR(sdev);
> +		pr_err("%s failed to register SoC as a device: %d\n", __func__, err);
> +		goto serial_number;
> +	}
> +
> +	return 0;
> +
> +serial_number:
> +	kfree(attr->serial_number);
> +	kfree(attr->revision);
> +	kfree(attr->soc_id);
> +family:
> +	kfree(attr->family);
> +attr:
> +	kfree(attr);
> +	return err;
> +}
> +
> +static const struct of_device_id imx9_soc_match[] = {
> +	{ .compatible = "fsl,imx93", },
> +	{ .compatible = "fsl,imx95", },
What happend to fsl,imx91 ?

Best regards
Re: [PATCH v3] soc: imx: Add SoC device register for i.MX9
Posted by Alexander Stein 1 year, 3 months ago 
Am Mittwoch, 30. Oktober 2024, 10:13:36 CET schrieb alice.guo@oss.nxp.com:
> From: "alice.guo" <alice.guo@nxp.com>
> 
> i.MX9 SoCs have SoC ID, SoC revision number and chip unique identifier
> which are provided by the corresponding ARM trusted firmware API. This
> patch intends to use SMC call to obtain these information and then
> register i.MX9 SoC as a device.
> 
> Signed-off-by: alice.guo <alice.guo@nxp.com>

I was able to successfully this on two boards:

$ grep . /sys/bus/soc/devices/soc0/* 2> /dev/null 
/sys/bus/soc/devices/soc0/family:Freescale i.MX
/sys/bus/soc/devices/soc0/machine:TQ-Systems i.MX93 TQMa93xxLA/TQMa93xxCA on MBa93xxCA starter kit
/sys/bus/soc/devices/soc0/revision:1.1
/sys/bus/soc/devices/soc0/serial_number:3d0f41f05242fc17baca88b84febf6de
/sys/bus/soc/devices/soc0/soc_id:i.MX93

$ grep . /sys/bus/soc/devices/soc0/* 2> /dev/null 
/sys/bus/soc/devices/soc0/family:Freescale i.MX
/sys/bus/soc/devices/soc0/machine:TQ-Systems i.MX95 TQMa95xxSA on MB-SMARC-2
/sys/bus/soc/devices/soc0/revision:1.1
/sys/bus/soc/devices/soc0/serial_number:64955bc2d946b9c3f11984a9522b2822
/sys/bus/soc/devices/soc0/soc_id:i.MX95

Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com>

Thanks
Alexander
> ---
> 
> Changes for v2:
>  - refine error log print
> Changes for v3:
>  - return -EINVAL when arm_smccc_smc failed
>  - fix the build warning caused by pr_err("%s: SMC failed: %d\n", __func__, res.a0);
>  - drop the pr_err in imx9_soc_init
>  - free the memory in the reverse order of allocation
>  - use of_match_node instead of of_machine_is_compatible
> 
>  drivers/soc/imx/Makefile   |   2 +-
>  drivers/soc/imx/soc-imx9.c | 106 +++++++++++++++++++++++++++++++++++++
>  2 files changed, 107 insertions(+), 1 deletion(-)
>  create mode 100644 drivers/soc/imx/soc-imx9.c
> 
> diff --git a/drivers/soc/imx/Makefile b/drivers/soc/imx/Makefile
> index 3ad321ca608a..ca6a5fa1618f 100644
> --- a/drivers/soc/imx/Makefile
> +++ b/drivers/soc/imx/Makefile
> @@ -3,4 +3,4 @@ ifeq ($(CONFIG_ARM),y)
>  obj-$(CONFIG_ARCH_MXC) += soc-imx.o
>  endif
>  obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o
> -obj-$(CONFIG_SOC_IMX9) += imx93-src.o
> +obj-$(CONFIG_SOC_IMX9) += imx93-src.o soc-imx9.o
> diff --git a/drivers/soc/imx/soc-imx9.c b/drivers/soc/imx/soc-imx9.c
> new file mode 100644
> index 000000000000..823395584533
> --- /dev/null
> +++ b/drivers/soc/imx/soc-imx9.c
> @@ -0,0 +1,106 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright 2024 NXP
> + */
> +
> +#include <linux/arm-smccc.h>
> +#include <linux/init.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/slab.h>
> +#include <linux/sys_soc.h>
> +
> +#define IMX_SIP_GET_SOC_INFO	0xc2000006
> +#define SOC_ID(x)		(((x) & 0xFFFF) >> 8)
> +#define SOC_REV_MAJOR(x)	((((x) >> 28) & 0xF) - 0x9)
> +#define SOC_REV_MINOR(x)	(((x) >> 24) & 0xF)
> +
> +static int imx9_soc_device_register(void)
> +{
> +	struct soc_device_attribute *attr;
> +	struct arm_smccc_res res;
> +	struct soc_device *sdev;
> +	u32 soc_id, rev_major, rev_minor;
> +	u64 uid127_64, uid63_0;
> +	int err;
> +
> +	attr = kzalloc(sizeof(*attr), GFP_KERNEL);
> +	if (!attr)
> +		return -ENOMEM;
> +
> +	err = of_property_read_string(of_root, "model", &attr->machine);
> +	if (err) {
> +		pr_err("%s: missing model property: %d\n", __func__, err);
> +		goto attr;
> +	}
> +
> +	attr->family = kasprintf(GFP_KERNEL, "Freescale i.MX");
> +
> +	/*
> +	 * Retrieve the soc id, rev & uid info:
> +	 * res.a1[31:16]: soc revision;
> +	 * res.a1[15:0]: soc id;
> +	 * res.a2: uid[127:64];
> +	 * res.a3: uid[63:0];
> +	 */
> +	arm_smccc_smc(IMX_SIP_GET_SOC_INFO, 0, 0, 0, 0, 0, 0, 0, &res);
> +	if (res.a0 != SMCCC_RET_SUCCESS) {
> +		pr_err("%s: SMC failed: 0x%lx\n", __func__, res.a0);
> +		err = -EINVAL;
> +		goto family;
> +	}
> +
> +	soc_id = SOC_ID(res.a1);
> +	rev_major = SOC_REV_MAJOR(res.a1);
> +	rev_minor = SOC_REV_MINOR(res.a1);
> +
> +	attr->soc_id = kasprintf(GFP_KERNEL, "i.MX%2x", soc_id);
> +	attr->revision = kasprintf(GFP_KERNEL, "%d.%d", rev_major, rev_minor);
> +
> +	uid127_64 = res.a2;
> +	uid63_0 = res.a3;
> +	attr->serial_number = kasprintf(GFP_KERNEL, "%016llx%016llx", uid127_64, uid63_0);
> +
> +	sdev = soc_device_register(attr);
> +	if (IS_ERR(sdev)) {
> +		err = PTR_ERR(sdev);
> +		pr_err("%s failed to register SoC as a device: %d\n", __func__, err);
> +		goto serial_number;
> +	}
> +
> +	return 0;
> +
> +serial_number:
> +	kfree(attr->serial_number);
> +	kfree(attr->revision);
> +	kfree(attr->soc_id);
> +family:
> +	kfree(attr->family);
> +attr:
> +	kfree(attr);
> +	return err;
> +}
> +
> +static const struct of_device_id imx9_soc_match[] = {
> +	{ .compatible = "fsl,imx93", },
> +	{ .compatible = "fsl,imx95", },
> +	{ }
> +};
> +
> +static int __init imx9_soc_init(void)
> +{
> +	int ret;
> +
> +	/* No match means it is not an i.MX 9 series SoC, do nothing. */
> +	if (!of_match_node(imx9_soc_match, of_root))
> +		return 0;
> +
> +	ret = imx9_soc_device_register();
> +
> +	return ret;
> +}
> +device_initcall(imx9_soc_init);
> +
> +MODULE_AUTHOR("NXP");
> +MODULE_DESCRIPTION("NXP i.MX9 SoC");
> +MODULE_LICENSE("GPL");
> 


-- 
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http://www.tq-group.com/

Patchew 2.1-devel-b67e4c2

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