USI8 I2C is used to communicate with an eeprom found on the battery
connector. Define USI8 in I2C configuration.
USI8 CONFIG register comes with a 0x0 reset value, meaning that USI8
doesn't have a default protocol (I2C, SPI, UART) at reset. Thus the
selection of the protocol is intentionally left for the board dtsi file.
Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxx>
---
arch/arm64/boot/dts/exynos/google/gs101.dtsi | 26 ++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index ffb7b4d89a8c..4ea1b180cd0a 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
@@ -354,6 +354,32 @@ pinctrl_peric0: pinctrl@10840000 {
interrupts = <GIC_SPI 625 IRQ_TYPE_LEVEL_HIGH 0>;
};
+ usi8: usi@109700c0 {
+ compatible = "google,gs101-usi",
+ "samsung,exynos850-usi";
+ reg = <0x109700c0 0x20>;
+ ranges;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ clocks = <&cmu_peric0 CLK_DOUT_PERIC0_USI8_USI>,
+ <&cmu_peric0 CLK_GOUT_PERIC0_CLK_PERIC0_USI8_USI_CLK>;
+ clock-names = "pclk", "ipclk";
+ samsung,sysreg = <&sysreg_peric0 0x101c>;
+ status = "disabled";
+
+ hsi2c_8: i2c@10970000 {
+ compatible = "google,gs101-hsi2c",
+ "samsung,exynosautov9-hsi2c";
+ reg = <0x10970000 0xc0>;
+ interrupts = <GIC_SPI 642
+ IRQ_TYPE_LEVEL_HIGH 0>;
+ clocks = <&cmu_peric0 CLK_DOUT_PERIC0_USI8_USI>,
+ <&cmu_peric0 CLK_GOUT_PERIC0_CLK_PERIC0_USI8_USI_CLK>;
+ clock-names = "hsi2c", "hsi2c_pclk";
+ status = "disabled";
+ };
+ };
+
usi_uart: usi@10a000c0 {
compatible = "google,gs101-usi",
"samsung,exynos850-usi";
--
2.43.0.472.g3155946c3a-goog
