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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: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju 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: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Lad Prabhakar 2021-06-09 17:37:16 +01:00 committed by Geert Uytterhoeven
parent f3b154529f
commit 187cd57db0
1 changed files with 32 additions and 1 deletions
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33
drivers/soc/renesas/renesas-soc.c
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@ -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) {