diff options
| author | Peng Fan | 2019-10-16 10:24:17 +0000 |
|---|---|---|
| committer | Stefano Babic | 2019-11-03 17:04:16 +0100 |
| commit | 9e094455495081979cd20ac730a42508717e37b5 (patch) | |
| tree | 9c3cababa92f3a8ede22f0ee8672021b222364ad | |
| parent | cde421cfc8f378fef9bd9b90e20c9633fe63d709 (diff) | |
imx8m: imx8mq: get chip rev for B1 revision
The i.MX8MQ B1 uses OCOTP_HW_OCOTP_READ_FUSE_DATA register for chip id.
It returns a magic number 0xff0055aa. update get_cpu_rev to support it,
and enable ocotp clock to access ocotp.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
| -rw-r--r-- | arch/arm/mach-imx/imx8m/clock_imx8mq.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-imx/imx8m/soc.c | 21 |
2 files changed, 15 insertions, 7 deletions
diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mq.c b/arch/arm/mach-imx/imx8m/clock_imx8mq.c index feecdb50f6c..5c3f780127b 100644 --- a/arch/arm/mach-imx/imx8m/clock_imx8mq.c +++ b/arch/arm/mach-imx/imx8m/clock_imx8mq.c @@ -804,6 +804,7 @@ int clock_init(void) init_wdog_clk(); clock_enable(CCGR_TSENSOR, 1); + clock_enable(CCGR_OCOTP, 1); return 0; } diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c index aeca82cdbf4..a924af431c9 100644 --- a/arch/arm/mach-imx/imx8m/soc.c +++ b/arch/arm/mach-imx/imx8m/soc.c @@ -202,14 +202,21 @@ u32 get_cpu_rev(void) } else { if (reg == CHIP_REV_1_0) { /* - * For B0 chip, the DIGPROG is not updated, still TO1.0. - * we have to check ROM version further + * For B0 chip, the DIGPROG is not updated, + * it is still TO1.0. we have to check ROM + * version or OCOTP_READ_FUSE_DATA. + * 0xff0055aa is magic number for B1. */ - rom_version = readl((void __iomem *)ROM_VERSION_A0); - if (rom_version != CHIP_REV_1_0) { - rom_version = readl((void __iomem *)ROM_VERSION_B0); - if (rom_version >= CHIP_REV_2_0) - reg = CHIP_REV_2_0; + if (readl((void __iomem *)(OCOTP_BASE_ADDR + 0x40)) == 0xff0055aa) { + reg = CHIP_REV_2_1; + } else { + rom_version = + readl((void __iomem *)ROM_VERSION_A0); + if (rom_version != CHIP_REV_1_0) { + rom_version = readl((void __iomem *)ROM_VERSION_B0); + if (rom_version == CHIP_REV_2_0) + reg = CHIP_REV_2_0; + } } } } |