[PATCH v4 7/8] arm64: dts: exynos: gs101: define USI8 with I2C configuration
From: Tudor Ambarus <tudor.ambarus@linaro.org>
Date: 2024-01-19 11:11:57
Also in:
linux-clk, linux-devicetree, linux-i2c, linux-samsung-soc, lkml
Subsystem:
arm/samsung s3c, s5p and exynos arm architectures, google tensor soc support, the rest · Maintainers:
Krzysztof Kozlowski, Peter Griffin, Linus Torvalds
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> --- arch/arm64/boot/dts/exynos/google/gs101.dtsi | 29 ++++++++++++++++++++ 1 file changed, 29 insertions(+)
diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index 6aa25cc4676e..f14a24628d04 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi@@ -352,6 +352,35 @@ 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_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";
--
2.43.0.429.g432eaa2c6b-goog
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