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authorLeonard Crestez <leonard.crestez@nxp.com>2019-05-13 14:22:13 +0300
committerShawn Guo <shawnguo@kernel.org>2019-05-20 10:20:41 +0300
commit2b14b802adac2d1bc7ffc6bcfe64fbb24b05a48d (patch)
tree4c3745eefbd571b6387033ce1efaf04315b011f7 /drivers/soc/imx
parenta188339ca5a396acc588e5851ed7e19f66b0ebd9 (diff)
downloadlinux-2b14b802adac2d1bc7ffc6bcfe64fbb24b05a48d.tar.xz
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.c29
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, },
{ }
};