soc: renesas: Identify RZ/V2M SoC

Add support for identifying the RZ/V2M (R9A09G011) SoC.
Note that the SoC does not have a identification register.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
[biju: removed config changes ]
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20221116102140.852889-3-biju.das.jz@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/soc/renesas/renesas-soc.c

@@ -76,6 +76,10 @@ static const struct renesas_family fam_rzv2l __initconst __maybe_unused = {
 	.name	= "RZ/V2L",
 };
 
+static const struct renesas_family fam_rzv2m __initconst __maybe_unused = {
+	.name	= "RZ/V2M",
+};
+
 static const struct renesas_family fam_shmobile __initconst __maybe_unused = {
 	.name	= "SH-Mobile",
 	.reg	= 0xe600101c,		/* CCCR (Common Chip Code Register) */
@@ -171,6 +175,10 @@ static const struct renesas_soc soc_rz_v2l __initconst __maybe_unused = {
 	.id     = 0x8447447,
 };
 
+static const struct renesas_soc soc_rz_v2m __initconst __maybe_unused = {
+	.family = &fam_rzv2m,
+};
+
 static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen1,
 };
@@ -380,6 +388,9 @@ static const struct of_device_id renesas_socs[] __initconst = {
 #if defined(CONFIG_ARCH_R9A07G054)
 	{ .compatible = "renesas,r9a07g054",	.data = &soc_rz_v2l },
 #endif
+#if defined(CONFIG_ARCH_R9A09G011)
+	{ .compatible = "renesas,r9a09g011",	.data = &soc_rz_v2m },
+#endif
 #ifdef CONFIG_ARCH_SH73A0
 	{ .compatible = "renesas,sh73a0",	.data = &soc_shmobile_ag5 },
 #endif
@@ -405,6 +416,11 @@ static const struct renesas_id id_rzg2l __initconst = {
 	.mask = 0xfffffff,
 };
 
+static const struct renesas_id id_rzv2m __initconst = {
+	.offset = 0x104,
+	.mask = 0xff,
+};
+
 static const struct renesas_id id_prr __initconst = {
 	.offset = 0,
 	.mask = 0xff00,
@@ -415,6 +431,7 @@ static const struct of_device_id renesas_ids[] __initconst = {
 	{ .compatible = "renesas,r9a07g043-sysc",	.data = &id_rzg2l },
 	{ .compatible = "renesas,r9a07g044-sysc",	.data = &id_rzg2l },
 	{ .compatible = "renesas,r9a07g054-sysc",	.data = &id_rzg2l },
+	{ .compatible = "renesas,r9a09g011-sys",	.data = &id_rzv2m },
 	{ .compatible = "renesas,prr",			.data = &id_prr },
 	{ /* sentinel */ }
 };
@@ -485,6 +502,11 @@ static int __init renesas_soc_init(void)
 			soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u",
 							   eshi);
 			rev_prefix = "Rev ";
+		} else if (id == &id_rzv2m) {
+			eshi = ((product >> 4) & 0x0f);
+			eslo = product & 0xf;
+			soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u.%u",
+							   eshi, eslo);
 		}
 
 		if (soc->id &&