[][mt7981: Enable i2c in kernel]
[Description]
Add mt7981 compatible
Fix I2C dts file
[Release-log]
N/A
Change-Id: I3466d328f40578e45dbe300011b20c4689132342
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5394285
diff --git a/target/linux/mediatek/patches-5.4/0901-i2c-busses-add-mt7981-support.patch b/target/linux/mediatek/patches-5.4/0901-i2c-busses-add-mt7981-support.patch
new file mode 100644
index 0000000..f79d2f8
--- /dev/null
+++ b/target/linux/mediatek/patches-5.4/0901-i2c-busses-add-mt7981-support.patch
@@ -0,0 +1,43 @@
+diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c
+index e1ef012..4fd4721 100644
+--- a/drivers/i2c/busses/i2c-mt65xx.c
++++ b/drivers/i2c/busses/i2c-mt65xx.c
+@@ -157,7 +157,7 @@ static const u16 mt_i2c_regs_v1[] = {
+
+ static const u16 mt_i2c_regs_v2[] = {
+ [OFFSET_DATA_PORT] = 0x0,
+- [OFFSET_SLAVE_ADDR] = 0x4,
++ [OFFSET_SLAVE_ADDR] = 0x94,
+ [OFFSET_INTR_MASK] = 0x8,
+ [OFFSET_INTR_STAT] = 0xc,
+ [OFFSET_CONTROL] = 0x10,
+@@ -289,6 +289,18 @@ static const struct mtk_i2c_compatible mt7622_compat = {
+ .ltiming_adjust = 0,
+ };
+
++static const struct mtk_i2c_compatible mt7981_compat = {
++ .regs = mt_i2c_regs_v2,
++ .pmic_i2c = 0,
++ .dcm = 0,
++ .auto_restart = 1,
++ .aux_len_reg = 1,
++ .support_33bits = 1,
++ .timing_adjust = 1,
++ .dma_sync = 1,
++ .ltiming_adjust = 1,
++};
++
+ static const struct mtk_i2c_compatible mt7986_compat = {
+ .quirks = &mt7622_i2c_quirks,
+ .regs = mt_i2c_regs_v1,
+@@ -332,6 +344,7 @@ static const struct of_device_id mtk_i2c_of_match[] = {
+ { .compatible = "mediatek,mt6577-i2c", .data = &mt6577_compat },
+ { .compatible = "mediatek,mt6589-i2c", .data = &mt6589_compat },
+ { .compatible = "mediatek,mt7622-i2c", .data = &mt7622_compat },
++ { .compatible = "mediatek,mt7981-i2c", .data = &mt7981_compat },
+ { .compatible = "mediatek,mt7986-i2c", .data = &mt7986_compat },
+ { .compatible = "mediatek,mt8173-i2c", .data = &mt8173_compat },
+ { .compatible = "mediatek,mt8183-i2c", .data = &mt8183_compat },
+--
+2.18.0
+