Rev 2.1 of i.MX8MQ silicon needs a special check different from
predecessor. Add all of the neccessary code to do just that (based on
similar code in vendor U-Boot tree).
Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
---
arch/arm/mach-imx/include/mach/imx8mq.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/arm/mach-imx/include/mach/imx8mq.h b/arch/arm/mach-imx/include/mach/imx8mq.h
index d69ec8145..08dc06fdb 100644
--- a/arch/arm/mach-imx/include/mach/imx8mq.h
+++ b/arch/arm/mach-imx/include/mach/imx8mq.h
@@ -9,6 +9,8 @@
#define IMX8MQ_ROM_VERSION_A0 0x800
#define IMX8MQ_ROM_VERSION_B0 0x83C
+#define IMX8MQ_OCOTP_VERSION_B1 0x40
+#define IMX8MQ_OCOTP_VERSION_B1_MAGIC 0xff0055aa
#define MX8MQ_ANATOP_DIGPROG 0x6c
@@ -20,12 +22,19 @@
static inline int imx8mq_cpu_revision(void)
{
void __iomem *anatop = IOMEM(MX8MQ_ANATOP_BASE_ADDR);
+ void __iomem *ocotp = IOMEM(MX8MQ_OCOTP_BASE_ADDR);
uint32_t revision = FIELD_GET(DIGPROG_MINOR,
readl(anatop + MX8MQ_ANATOP_DIGPROG));
uint32_t rom_version;
if (revision != IMX_CHIP_REV_1_0)
return revision;
+ /*
+ * For B1 chip we need to check OCOTP
+ */
+ if (readl(ocotp + IMX8MQ_OCOTP_VERSION_B1) ==
+ IMX8MQ_OCOTP_VERSION_B1_MAGIC)
+ return IMX_CHIP_REV_2_1;
/*
* For B0 chip, the DIGPROG is not updated, still TO1.0.
* we have to check ROM version further
--
2.20.1
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