Add i2c AC timing binding to binding file. It can give the AC
timing parameters to meet I2C specification at different speed.
Signed-off-by: Qii Wang <qii.wang@xxxxxxxxxxxx>
---
.../devicetree/bindings/i2c/i2c-mt65xx.txt | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt
index 68f6d73..0f92813 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt
@@ -30,6 +30,7 @@ Optional properties:
- mediatek,have-pmic: platform can control i2c form special pmic side.
Only mt6589 and mt8135 support this feature.
- mediatek,use-push-pull: IO config use push-pull mode.
+ - ac-timing: give some AC timing parameters to meet i2c spec fully.
Example:
@@ -43,5 +44,15 @@ Example:
clock-div = <16>;
clocks = <&i2c0_ck>, <&ap_dma_ck>;
clock-names = "main", "dma";
+ ac-timing = /bits/ 16 <
+ 0x8001 /* 0:ext */
+ 0x0005 /* 1:inter_clk_div */
+ 0x0102 /* 2:scl_hl_ratio */
+ 0x0102 /* 3:hs_scl_hl_ratio */
+ 0x0002 /* 4:scl_mis_comp */
+ 0x0002 /* 5:sta_stop */
+ 0x0002 /* 6:hs_sta_stop */
+ 0x0002 /* 7:sda_timing */
+ >;
};
--
1.7.9.5
