diff options
| author | Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> | 2021-06-09 17:37:16 +0100 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2021-06-10 15:29:03 +0200 |
| commit | 187cd57db09355fd169c661fa1c44bda06b013e8 (patch) | |
| tree | 0357e6ed2474d27ad991da8e8897de35238649c3 /drivers/soc | |
| parent | f3b154529fb89e9feae18d5e9da40559172d8d19 (diff) | |
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>
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/renesas/renesas-soc.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/drivers/soc/renesas/renesas-soc.c b/drivers/soc/renesas/renesas-soc.c index 0f8eff4a641a..8310fce7714e 100644 --- a/drivers/soc/renesas/renesas-soc.c +++ b/drivers/soc/renesas/renesas-soc.c @@ -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) { |