Commit 187cd57d authored by Lad Prabhakar's avatar Lad Prabhakar Committed by Geert Uytterhoeven
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soc: renesas: Add support to read LSI DEVID register of RZ/G2{L,LC} SoC's 



Add support for reading the LSI DEVID register which is present in
SYSC block of RZ/G2{L,LC} SoC's.

Signed-off-by: default avatarLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: default avatarBiju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20210609163717.3083-3-prabhakar.mahadev-lad.rj@bp.renesas.com


Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
parent f3b15452

drivers/soc/renesas/renesas-soc.c

+32 −1
Original line number Diff line number Diff line
@@ -56,6 +56,10 @@ static const struct renesas_family fam_rzg2 __initconst __maybe_unused = { 
	.reg	= 0xfff00044,		/* PRR (Product Register) */

};



static const struct renesas_family fam_rzg2l __initconst __maybe_unused = {

	.name	= "RZ/G2L",

};



static const struct renesas_family fam_shmobile __initconst __maybe_unused = {

	.name	= "SH-Mobile",

	.reg	= 0xe600101c,		/* CCCR (Common Chip Code Register) */
@@ -64,7 +68,7 @@ static const struct renesas_family fam_shmobile __initconst __maybe_unused = { 


struct renesas_soc {

	const struct renesas_family *family;

	u8 id;

	u32 id;

};



static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = {
@@ -131,6 +135,11 @@ static const struct renesas_soc soc_rz_g2h __initconst __maybe_unused = { 
	.id	= 0x4f,

};



static const struct renesas_soc soc_rz_g2l __initconst __maybe_unused = {

	.family = &fam_rzg2l,

	.id     = 0x841c447,

};



static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = {

	.family	= &fam_rcar_gen1,

};
@@ -299,6 +308,9 @@ static const struct of_device_id renesas_socs[] __initconst = { 
#ifdef CONFIG_ARCH_R8A779A0

	{ .compatible = "renesas,r8a779a0",	.data = &soc_rcar_v3u },

#endif

#if defined(CONFIG_ARCH_R9A07G044)

	{ .compatible = "renesas,r9a07g044",	.data = &soc_rz_g2l },

#endif

#ifdef CONFIG_ARCH_SH73A0

	{ .compatible = "renesas,sh73a0",	.data = &soc_shmobile_ag5 },

#endif
@@ -348,6 +360,25 @@ static int __init renesas_soc_init(void) 
		goto done;

	}



	np = of_find_compatible_node(NULL, NULL, "renesas,r9a07g044-sysc");

	if (np) {

		chipid = of_iomap(np, 0);

		of_node_put(np);



		if (chipid) {

			product = readl(chipid + 0x0a04);

			iounmap(chipid);



			if (soc->id && (product & 0xfffffff) != soc->id) {

				pr_warn("SoC mismatch (product = 0x%x)\n",

					product);

				return -ENODEV;

			}

		}



		goto done;

	}



	/* Try PRR first, then hardcoded fallback */

	np = of_find_compatible_node(NULL, NULL, "renesas,prr");

	if (np) {