arm64: dts: exynos: gs101: define USI8 with I2C configuration

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 dts file.

Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://lore.kernel.org/r/20240119111132.1290455-8-tudor.ambarus@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index dd2d6eededaa8c0864a564ef3d029503cfc44186..6ded153cb475d63457ea0a0321c39b63236530bd 100644 (file)
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
@@ -372,6 +372,35 @@
                        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_GOUT_PERIC0_CLK_PERIC0_USI8_USI_CLK>,
+                                <&cmu_peric0 CLK_GOUT_PERIC0_PERIC0_TOP0_IPCLK_7>;
+                       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>;
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&hsi2c8_bus>;
+                               clocks = <&cmu_peric0 CLK_GOUT_PERIC0_PERIC0_TOP0_IPCLK_7>,
+                                        <&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";