Merge tag 'arm-soc-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC updates from Arnd Bergmann:
 "These are updates for SoC specific code, mostly in the 32-bit
  architecture:

   - A rework for handling MMIO accesses in Renesas SoCs in a more
     portable way

   - Updates to SoC version detection in NXP i.MX SoCs.

   - Smaller bug fixes for OMAP, Samsung, Marvell, Amlogic"

* tag 'arm-soc-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (24 commits)
  arm64: Kconfig: meson: drop pinctrl
  ARM: mxs: Add serial number support for i.MX23, i.MX28 SoCs
  MAINTAINERS: switch mvebu tree to kernel.org
  MAINTAINERS: Add an entry for MikroTik CRS3xx 98DX3236 boards
  ARM: shmobile: Stop using __raw_*() I/O accessors
  ARM: shmobile: sh73a0: Remove obsolete static mapping
  ARM: shmobile: sh73a0: Use ioremap() to map SMP registers
  ARM: shmobile: sh73a0: Use ioremap() to map L2C registers
  ARM: shmobile: r8a7779: Remove obsolete static mappings
  ARM: shmobile: r8a7779: Use ioremap() to map SMP registers
  ARM: shmobile: r8a7779: Use ioremap() to map INTC2 registers
  ARM: shmobile: r8a7778: Introduce HPBREG_BASE
  ARM: OMAP1: clock: Use IS_ERR_OR_NULL() to clean code
  ARM: OMAP2+: Remove redundant null check before clk_prepare_enable/clk_disable_unprepare
  ARM: OMAP2+: Remove redundant assignment to variable ret
  ARM: OMAP2+: Fix kfree NULL pointer in omap2xxx_clkt_vps_init
  ARM: OMAP2+: Fix memleak in omap2xxx_clkt_vps_init
  ARM: exynos: extend cpuidle support to P4 Note boards
  ARM: imx: mach-imx6q: correctly identify i.MX6QP SoCs
  ARM: imx: imx7ulp: Add a comment explaining the B2 silicon version
  ...

1 files changed, 19 insertions, 0 deletions

diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c
index c109f47e9cbc..25c9d184fa4c 100644
--- a/arch/arm/mach-mxs/mach-mxs.c
+++ b/arch/arm/mach-mxs/mach-mxs.c
@@ -22,6 +22,7 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <asm/mach/time.h>
+#include <asm/system_info.h>
 #include <asm/system_misc.h>
 
 #include "pm.h"
@@ -51,6 +52,9 @@
 #define MXS_CLR_ADDR		0x8
 #define MXS_TOG_ADDR		0xc
 
+#define HW_OCOTP_OPS2		19	/* offset 0x150 */
+#define HW_OCOTP_OPS3		20	/* offset 0x160 */
+
 static u32 chipid;
 static u32 socid;
 
@@ -379,6 +383,8 @@ static void __init mxs_machine_init(void)
 	struct device *parent;
 	struct soc_device *soc_dev;
 	struct soc_device_attribute *soc_dev_attr;
+	u64 soc_uid = 0;
+	const u32 *ocotp = mxs_get_ocotp();
 	int ret;
 
 	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
@@ -394,8 +400,21 @@ static void __init mxs_machine_init(void)
 	soc_dev_attr->soc_id = mxs_get_soc_id();
 	soc_dev_attr->revision = mxs_get_revision();
 
+	if (socid == HW_DIGCTL_CHIPID_MX23) {
+		soc_uid = system_serial_low = ocotp[HW_OCOTP_OPS3];
+	} else if (socid == HW_DIGCTL_CHIPID_MX28) {
+		soc_uid = system_serial_high = ocotp[HW_OCOTP_OPS2];
+		soc_uid <<= 32;
+		system_serial_low = ocotp[HW_OCOTP_OPS3];
+		soc_uid |= system_serial_low;
+	}
+
+	if (soc_uid)
+		soc_dev_attr->serial_number = kasprintf(GFP_KERNEL, "%016llX", soc_uid);
+
 	soc_dev = soc_device_register(soc_dev_attr);
 	if (IS_ERR(soc_dev)) {
+		kfree(soc_dev_attr->serial_number);
 		kfree(soc_dev_attr->revision);
 		kfree(soc_dev_attr);
 		return;