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authorOlof Johansson <olof@lixom.net>2021-06-12 08:45:57 -0700
committerOlof Johansson <olof@lixom.net>2021-06-12 08:45:59 -0700
commitec7f5cff6effcc580a85f91001b8ffbeb21ed81e (patch)
treeb4b3049185f410b26da98edb4c6006360b38b936 /drivers/soc
parent959cd8f125bdafc0af197252554b662b5e18967b (diff)
parent187cd57db09355fd169c661fa1c44bda06b013e8 (diff)
downloadlinux-ec7f5cff6effcc580a85f91001b8ffbeb21ed81e.tar.bz2
Merge tag 'renesas-drivers-for-v5.14-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into arm/drivers
Renesas driver updates for v5.14 - Initial support for the new RZ/G2L SoC variants. * tag 'renesas-drivers-for-v5.14-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel: soc: renesas: Add support to read LSI DEVID register of RZ/G2{L,LC} SoC's soc: renesas: Add ARCH_R9A07G044 for the new RZ/G2L SoC's Link: https://lore.kernel.org/r/cover.1623403800.git.geert+renesas@glider.be Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/soc')
-rw-r--r--drivers/soc/renesas/Kconfig5
-rw-r--r--drivers/soc/renesas/renesas-soc.c33
2 files changed, 37 insertions, 1 deletions
diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig
index b70bbc38efc6..71b44c31b012 100644
--- a/drivers/soc/renesas/Kconfig
+++ b/drivers/soc/renesas/Kconfig
@@ -279,6 +279,11 @@ config ARCH_R8A774B1
help
This enables support for the Renesas RZ/G2N SoC.
+config ARCH_R9A07G044
+ bool "ARM64 Platform support for RZ/G2L"
+ help
+ This enables support for the Renesas RZ/G2L SoC variants.
+
endif # ARM64
config RST_RCAR
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) {