* [PATCH 0/2] Add i.MX51/i.MX53 serial number support
@ 2021-01-27 17:40 ` Sebastian Reichel
0 siblings, 0 replies; 8+ messages in thread
From: Sebastian Reichel @ 2021-01-27 17:40 UTC (permalink / raw)
To: Shawn Guo, Sascha Hauer
Cc: Rob Herring, Fabio Estevam, Pengutronix Kernel Team,
NXP Linux Team, linux-arm-kernel, devicetree, linux-kernel,
Sebastian Reichel, kernel
Hi,
This complements support for reading the unique ID / serial
number on i.MX by adding the feature for i.MX51 and i.MX53.
This has been tested on i.MX53. I also added support for
i.MX51 since it uses exactly the same registers according
to its datasheet.
I did not add support for older i.MX processor. They also have
an IIM IP-core, but their datasheet does not contain information
about the unique ID registers and I do not have the hardware for
testing.
-- Sebastian
Sebastian Reichel (2):
ARM: dts: imx: Mark IIM as syscon on i.MX51/i.MX53
soc: imx: add i.MX51/i.MX53 unique id support
arch/arm/boot/dts/imx51.dtsi | 2 +-
arch/arm/boot/dts/imx53.dtsi | 2 +-
drivers/soc/imx/soc-imx.c | 12 ++++++++++++
3 files changed, 14 insertions(+), 2 deletions(-)
--
2.29.2
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH 0/2] Add i.MX51/i.MX53 serial number support
@ 2021-01-27 17:40 ` Sebastian Reichel
0 siblings, 0 replies; 8+ messages in thread
From: Sebastian Reichel @ 2021-01-27 17:40 UTC (permalink / raw)
To: Shawn Guo, Sascha Hauer
Cc: devicetree, linux-kernel, Sebastian Reichel, Rob Herring,
NXP Linux Team, Pengutronix Kernel Team, kernel, Fabio Estevam,
linux-arm-kernel
Hi,
This complements support for reading the unique ID / serial
number on i.MX by adding the feature for i.MX51 and i.MX53.
This has been tested on i.MX53. I also added support for
i.MX51 since it uses exactly the same registers according
to its datasheet.
I did not add support for older i.MX processor. They also have
an IIM IP-core, but their datasheet does not contain information
about the unique ID registers and I do not have the hardware for
testing.
-- Sebastian
Sebastian Reichel (2):
ARM: dts: imx: Mark IIM as syscon on i.MX51/i.MX53
soc: imx: add i.MX51/i.MX53 unique id support
arch/arm/boot/dts/imx51.dtsi | 2 +-
arch/arm/boot/dts/imx53.dtsi | 2 +-
drivers/soc/imx/soc-imx.c | 12 ++++++++++++
3 files changed, 14 insertions(+), 2 deletions(-)
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH 1/2] ARM: dts: imx: Mark IIM as syscon on i.MX51/i.MX53
2021-01-27 17:40 ` Sebastian Reichel
@ 2021-01-27 17:40 ` Sebastian Reichel
-1 siblings, 0 replies; 8+ messages in thread
From: Sebastian Reichel @ 2021-01-27 17:40 UTC (permalink / raw)
To: Shawn Guo, Sascha Hauer
Cc: Rob Herring, Fabio Estevam, Pengutronix Kernel Team,
NXP Linux Team, linux-arm-kernel, devicetree, linux-kernel,
Sebastian Reichel, kernel
IIM contains system fuses with information like SoC unique ID
(serial) on i.MX51 and i.MX53. Add "syscon" compatible allowing
simple access.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
arch/arm/boot/dts/imx51.dtsi | 2 +-
arch/arm/boot/dts/imx53.dtsi | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/imx51.dtsi b/arch/arm/boot/dts/imx51.dtsi
index 7ebb46ce9e36..01cfcbe5928e 100644
--- a/arch/arm/boot/dts/imx51.dtsi
+++ b/arch/arm/boot/dts/imx51.dtsi
@@ -467,7 +467,7 @@ aipstz2: bridge@83f00000 {
};
iim: efuse@83f98000 {
- compatible = "fsl,imx51-iim", "fsl,imx27-iim";
+ compatible = "fsl,imx51-iim", "fsl,imx27-iim", "syscon";
reg = <0x83f98000 0x4000>;
interrupts = <69>;
clocks = <&clks IMX5_CLK_IIM_GATE>;
diff --git a/arch/arm/boot/dts/imx53.dtsi b/arch/arm/boot/dts/imx53.dtsi
index 000050aeeabe..2cf3909cca2f 100644
--- a/arch/arm/boot/dts/imx53.dtsi
+++ b/arch/arm/boot/dts/imx53.dtsi
@@ -668,7 +668,7 @@ aipstz2: bridge@63f00000 {
};
iim: efuse@63f98000 {
- compatible = "fsl,imx53-iim", "fsl,imx27-iim";
+ compatible = "fsl,imx53-iim", "fsl,imx27-iim", "syscon";
reg = <0x63f98000 0x4000>;
interrupts = <69>;
clocks = <&clks IMX5_CLK_IIM_GATE>;
--
2.29.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH 1/2] ARM: dts: imx: Mark IIM as syscon on i.MX51/i.MX53
@ 2021-01-27 17:40 ` Sebastian Reichel
0 siblings, 0 replies; 8+ messages in thread
From: Sebastian Reichel @ 2021-01-27 17:40 UTC (permalink / raw)
To: Shawn Guo, Sascha Hauer
Cc: devicetree, linux-kernel, Sebastian Reichel, Rob Herring,
NXP Linux Team, Pengutronix Kernel Team, kernel, Fabio Estevam,
linux-arm-kernel
IIM contains system fuses with information like SoC unique ID
(serial) on i.MX51 and i.MX53. Add "syscon" compatible allowing
simple access.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
arch/arm/boot/dts/imx51.dtsi | 2 +-
arch/arm/boot/dts/imx53.dtsi | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/imx51.dtsi b/arch/arm/boot/dts/imx51.dtsi
index 7ebb46ce9e36..01cfcbe5928e 100644
--- a/arch/arm/boot/dts/imx51.dtsi
+++ b/arch/arm/boot/dts/imx51.dtsi
@@ -467,7 +467,7 @@ aipstz2: bridge@83f00000 {
};
iim: efuse@83f98000 {
- compatible = "fsl,imx51-iim", "fsl,imx27-iim";
+ compatible = "fsl,imx51-iim", "fsl,imx27-iim", "syscon";
reg = <0x83f98000 0x4000>;
interrupts = <69>;
clocks = <&clks IMX5_CLK_IIM_GATE>;
diff --git a/arch/arm/boot/dts/imx53.dtsi b/arch/arm/boot/dts/imx53.dtsi
index 000050aeeabe..2cf3909cca2f 100644
--- a/arch/arm/boot/dts/imx53.dtsi
+++ b/arch/arm/boot/dts/imx53.dtsi
@@ -668,7 +668,7 @@ aipstz2: bridge@63f00000 {
};
iim: efuse@63f98000 {
- compatible = "fsl,imx53-iim", "fsl,imx27-iim";
+ compatible = "fsl,imx53-iim", "fsl,imx27-iim", "syscon";
reg = <0x63f98000 0x4000>;
interrupts = <69>;
clocks = <&clks IMX5_CLK_IIM_GATE>;
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH 2/2] soc: imx: add i.MX51/i.MX53 unique id support
2021-01-27 17:40 ` Sebastian Reichel
@ 2021-01-27 17:40 ` Sebastian Reichel
-1 siblings, 0 replies; 8+ messages in thread
From: Sebastian Reichel @ 2021-01-27 17:40 UTC (permalink / raw)
To: Shawn Guo, Sascha Hauer
Cc: Rob Herring, Fabio Estevam, Pengutronix Kernel Team,
NXP Linux Team, linux-arm-kernel, devicetree, linux-kernel,
Sebastian Reichel, kernel
i.MX51 and i.MX53 SoCs have a 64-bit SoC unique ID stored in IIM,
which can be used as SoC serial number. The same feature is already
implemented for i.MX6/i.MX7, so this complements support to earlier
SoCs.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
drivers/soc/imx/soc-imx.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/soc/imx/soc-imx.c b/drivers/soc/imx/soc-imx.c
index 01bfea1cb64a..0738c0f36792 100644
--- a/drivers/soc/imx/soc-imx.c
+++ b/drivers/soc/imx/soc-imx.c
@@ -13,6 +13,8 @@
#include <soc/imx/cpu.h>
#include <soc/imx/revision.h>
+#define IIM_UID 0x820
+
#define OCOTP_UID_H 0x420
#define OCOTP_UID_L 0x410
@@ -32,6 +34,7 @@ static int __init imx_soc_device_init(void)
u64 soc_uid = 0;
u32 val;
int ret;
+ int i;
if (of_machine_is_compatible("fsl,ls1021a"))
return 0;
@@ -68,9 +71,11 @@ static int __init imx_soc_device_init(void)
soc_id = "i.MX35";
break;
case MXC_CPU_MX51:
+ ocotp_compat = "fsl,imx51-iim";
soc_id = "i.MX51";
break;
case MXC_CPU_MX53:
+ ocotp_compat = "fsl,imx53-iim";
soc_id = "i.MX53";
break;
case MXC_CPU_IMX6SL:
@@ -153,6 +158,13 @@ static int __init imx_soc_device_init(void)
regmap_read(ocotp, OCOTP_ULP_UID_1, &val);
soc_uid <<= 16;
soc_uid |= val & 0xffff;
+ } else if (__mxc_cpu_type == MXC_CPU_MX51 ||
+ __mxc_cpu_type == MXC_CPU_MX53) {
+ for (i=0; i < 8; i++) {
+ regmap_read(ocotp, IIM_UID + i*4, &val);
+ soc_uid <<= 8;
+ soc_uid |= (val & 0xff);
+ }
} else {
regmap_read(ocotp, OCOTP_UID_H, &val);
soc_uid = val;
--
2.29.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH 2/2] soc: imx: add i.MX51/i.MX53 unique id support
@ 2021-01-27 17:40 ` Sebastian Reichel
0 siblings, 0 replies; 8+ messages in thread
From: Sebastian Reichel @ 2021-01-27 17:40 UTC (permalink / raw)
To: Shawn Guo, Sascha Hauer
Cc: devicetree, linux-kernel, Sebastian Reichel, Rob Herring,
NXP Linux Team, Pengutronix Kernel Team, kernel, Fabio Estevam,
linux-arm-kernel
i.MX51 and i.MX53 SoCs have a 64-bit SoC unique ID stored in IIM,
which can be used as SoC serial number. The same feature is already
implemented for i.MX6/i.MX7, so this complements support to earlier
SoCs.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
drivers/soc/imx/soc-imx.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/soc/imx/soc-imx.c b/drivers/soc/imx/soc-imx.c
index 01bfea1cb64a..0738c0f36792 100644
--- a/drivers/soc/imx/soc-imx.c
+++ b/drivers/soc/imx/soc-imx.c
@@ -13,6 +13,8 @@
#include <soc/imx/cpu.h>
#include <soc/imx/revision.h>
+#define IIM_UID 0x820
+
#define OCOTP_UID_H 0x420
#define OCOTP_UID_L 0x410
@@ -32,6 +34,7 @@ static int __init imx_soc_device_init(void)
u64 soc_uid = 0;
u32 val;
int ret;
+ int i;
if (of_machine_is_compatible("fsl,ls1021a"))
return 0;
@@ -68,9 +71,11 @@ static int __init imx_soc_device_init(void)
soc_id = "i.MX35";
break;
case MXC_CPU_MX51:
+ ocotp_compat = "fsl,imx51-iim";
soc_id = "i.MX51";
break;
case MXC_CPU_MX53:
+ ocotp_compat = "fsl,imx53-iim";
soc_id = "i.MX53";
break;
case MXC_CPU_IMX6SL:
@@ -153,6 +158,13 @@ static int __init imx_soc_device_init(void)
regmap_read(ocotp, OCOTP_ULP_UID_1, &val);
soc_uid <<= 16;
soc_uid |= val & 0xffff;
+ } else if (__mxc_cpu_type == MXC_CPU_MX51 ||
+ __mxc_cpu_type == MXC_CPU_MX53) {
+ for (i=0; i < 8; i++) {
+ regmap_read(ocotp, IIM_UID + i*4, &val);
+ soc_uid <<= 8;
+ soc_uid |= (val & 0xff);
+ }
} else {
regmap_read(ocotp, OCOTP_UID_H, &val);
soc_uid = val;
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PATCH 0/2] Add i.MX51/i.MX53 serial number support
2021-01-27 17:40 ` Sebastian Reichel
@ 2021-03-03 9:57 ` Shawn Guo
-1 siblings, 0 replies; 8+ messages in thread
From: Shawn Guo @ 2021-03-03 9:57 UTC (permalink / raw)
To: Sebastian Reichel
Cc: Sascha Hauer, Rob Herring, Fabio Estevam,
Pengutronix Kernel Team, NXP Linux Team, linux-arm-kernel,
devicetree, linux-kernel, kernel
On Wed, Jan 27, 2021 at 06:40:22PM +0100, Sebastian Reichel wrote:
> Sebastian Reichel (2):
> ARM: dts: imx: Mark IIM as syscon on i.MX51/i.MX53
> soc: imx: add i.MX51/i.MX53 unique id support
Applied both, thanks.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH 0/2] Add i.MX51/i.MX53 serial number support
@ 2021-03-03 9:57 ` Shawn Guo
0 siblings, 0 replies; 8+ messages in thread
From: Shawn Guo @ 2021-03-03 9:57 UTC (permalink / raw)
To: Sebastian Reichel
Cc: Sascha Hauer, Rob Herring, Fabio Estevam,
Pengutronix Kernel Team, NXP Linux Team, linux-arm-kernel,
devicetree, linux-kernel, kernel
On Wed, Jan 27, 2021 at 06:40:22PM +0100, Sebastian Reichel wrote:
> Sebastian Reichel (2):
> ARM: dts: imx: Mark IIM as syscon on i.MX51/i.MX53
> soc: imx: add i.MX51/i.MX53 unique id support
Applied both, thanks.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2021-03-03 17:11 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-27 17:40 [PATCH 0/2] Add i.MX51/i.MX53 serial number support Sebastian Reichel
2021-01-27 17:40 ` Sebastian Reichel
2021-01-27 17:40 ` [PATCH 1/2] ARM: dts: imx: Mark IIM as syscon on i.MX51/i.MX53 Sebastian Reichel
2021-01-27 17:40 ` Sebastian Reichel
2021-01-27 17:40 ` [PATCH 2/2] soc: imx: add i.MX51/i.MX53 unique id support Sebastian Reichel
2021-01-27 17:40 ` Sebastian Reichel
2021-03-03 9:57 ` [PATCH 0/2] Add i.MX51/i.MX53 serial number support Shawn Guo
2021-03-03 9:57 ` Shawn Guo
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