[PATCH v4 3/3] i2c: mediatek: Add i2c compatible for MediaTek MT7622

Jun Gao
2017-08-21T03:36:54Z

From: Jun Gao <jun.gao@mediatek.com>

Add i2c compatible for MT7622. Compare to MT8173 i2c controller,
MT7622 limits message numbers to 255, and does not support 4GB
DMA mode.

Signed-off-by: Jun Gao <jun.gao@mediatek.com>
Reviewed-by: Yingjoe Chen <yingjoe.chen@mediatek.com>
---
drivers/i2c/busses/i2c-mt65xx.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c
index 9bedf0b..09d288c 100644
--- a/drivers/i2c/busses/i2c-mt65xx.c
+++ b/drivers/i2c/busses/i2c-mt65xx.c
@@ -172,6 +172,10 @@ struct mtk_i2c {
.max_comb_2nd_msg_len = 31,
};

+static const struct i2c_adapter_quirks mt7622_i2c_quirks = {
+ .max_num_msgs = 255,
+};
+
static const struct mtk_i2c_compatible mt6577_compat = {
.quirks = &mt6577_i2c_quirks,
.pmic_i2c = 0,
@@ -190,6 +194,15 @@ struct mtk_i2c {
.support_33bits = 0,
};

+static const struct mtk_i2c_compatible mt7622_compat = {
+ .quirks = &mt7622_i2c_quirks,
+ .pmic_i2c = 0,
+ .dcm = 1,
+ .auto_restart = 1,
+ .aux_len_reg = 1,
+ .support_33bits = 0,
+};
+
static const struct mtk_i2c_compatible mt8173_compat = {
.pmic_i2c = 0,
.dcm = 1,
@@ -201,6 +214,7 @@ struct mtk_i2c {
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,mt8173-i2c", .data = &mt8173_compat },
{}
};
--
1.8.1.1