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author | Leonard Crestez <leonard.crestez@nxp.com> | 2019-05-13 11:22:13 +0000 |
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committer | Shawn Guo <shawnguo@kernel.org> | 2019-05-20 15:20:41 +0800 |
commit | 2b14b802adac2d1bc7ffc6bcfe64fbb24b05a48d (patch) | |
tree | 4c3745eefbd571b6387033ce1efaf04315b011f7 /drivers/soc/imx | |
parent | a188339ca5a396acc588e5851ed7e19f66b0ebd9 (diff) | |
download | linux-stable-2b14b802adac2d1bc7ffc6bcfe64fbb24b05a48d.tar.gz linux-stable-2b14b802adac2d1bc7ffc6bcfe64fbb24b05a48d.tar.bz2 linux-stable-2b14b802adac2d1bc7ffc6bcfe64fbb24b05a48d.zip |
soc: imx: Read imx8mm soc revision from anatop
Like on imx6/7 we can read version information from a register in
anatop, and in the same format.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'drivers/soc/imx')
-rw-r--r-- | drivers/soc/imx/soc-imx8.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/soc/imx/soc-imx8.c b/drivers/soc/imx/soc-imx8.c index fc6429f9170a..cd10726e64e4 100644 --- a/drivers/soc/imx/soc-imx8.c +++ b/drivers/soc/imx/soc-imx8.c @@ -16,6 +16,9 @@ #define IMX8MQ_SW_INFO_B1 0x40 #define IMX8MQ_SW_MAGIC_B1 0xff0055aa +/* Same as ANADIG_DIGPROG_IMX7D */ +#define ANADIG_DIGPROG_IMX8MM 0x800 + struct imx8_soc_data { char *name; u32 (*soc_revision)(void); @@ -46,13 +49,39 @@ out: return rev; } +static u32 __init imx8mm_soc_revision(void) +{ + struct device_node *np; + void __iomem *anatop_base; + u32 rev; + + np = of_find_compatible_node(NULL, NULL, "fsl,imx8mm-anatop"); + if (!np) + return 0; + + anatop_base = of_iomap(np, 0); + WARN_ON(!anatop_base); + + rev = readl_relaxed(anatop_base + ANADIG_DIGPROG_IMX8MM); + + iounmap(anatop_base); + of_node_put(np); + return rev; +} + static const struct imx8_soc_data imx8mq_soc_data = { .name = "i.MX8MQ", .soc_revision = imx8mq_soc_revision, }; +static const struct imx8_soc_data imx8mm_soc_data = { + .name = "i.MX8MM", + .soc_revision = imx8mm_soc_revision, +}; + static const struct of_device_id imx8_soc_match[] = { { .compatible = "fsl,imx8mq", .data = &imx8mq_soc_data, }, + { .compatible = "fsl,imx8mm", .data = &imx8mm_soc_data, }, { } }; |