Commit 2b14b802 authored by Leonard Crestez's avatar Leonard Crestez Committed by Shawn Guo
Browse files

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: default avatarLeonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: default avatarFabio Estevam <festevam@gmail.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent a188339c

drivers/soc/imx/soc-imx8.c

+29 −0
Original line number Diff line number Diff line
@@ -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 @@ static u32 __init imx8mq_soc_revision(void) 
	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, },

	{ }

};