The Product Register of R-Car M3-W ES1.1 incorrectly identifies the SoC
revision as ES2.0. Add a workaround to fix this.
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
Is it already known how future revisions will be identified?
---
drivers/soc/renesas/renesas-soc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/soc/renesas/renesas-soc.c b/drivers/soc/renesas/renesas-soc.c
index f8389ed2249f9816..5c7f920ff060957a 100644
--- a/drivers/soc/renesas/renesas-soc.c
+++ b/drivers/soc/renesas/renesas-soc.c
@@ -293,6 +293,9 @@ static int __init renesas_soc_init(void)
if (chipid) {
product = readl(chipid);
iounmap(chipid);
+ /* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */
+ if ((product & 0x7fff) == 0x5210)
+ product ^= 0x11;
if (soc->id && ((product >> 8) & 0xff) != soc->id) {
pr_warn("SoC mismatch (product = 0x%x)\n", product);
return -ENODEV;
--
2.7.4
