[PATCH v2] arm64: dts: exynosautov9: convert serial_0 for USI
From: Chanho Park <hidden>
Date: 2021-12-08 09:25:38
According to USI v2 driver change[1], serial_0 node should be converted to use the USI node hierarchy. syscon_peric0 will be used as a syscon node to control the USI00_USI_SW_CONF register. This also changes the serial node name from uart@ to serial@. [1]: https://lore.kernel.org/linux-samsung-soc/20211204195757.8600-2-semen.protsenko@linaro.org/ Cc: Sam Protsenko <semen.protsenko@linaro.org> Signed-off-by: Chanho Park <redacted> --- Change from v1: - Put usi_0 node alphabetically in sadk.dts .../boot/dts/exynos/exynosautov9-sadk.dts | 4 +++ arch/arm64/boot/dts/exynos/exynosautov9.dtsi | 36 ++++++++++++++----- 2 files changed, 32 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts b/arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts
index ef46d7aa6e28..57518cb5e8c4 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts
+++ b/arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts@@ -54,3 +54,7 @@ &ufs_0 { vcc-supply = <&ufs_0_fixed_vcc_reg>; vcc-fixed-regulator; }; + +&usi_0 { + status = "okay"; +};
diff --git a/arch/arm64/boot/dts/exynos/exynosautov9.dtsi b/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
index a960c0bc2dba..de8fcb82eaec 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynosautov9.dtsi@@ -7,6 +7,7 @@ */ #include <dt-bindings/interrupt-controller/arm-gic.h> +#include <dt-bindings/soc/samsung,exynos-usi.h> / { compatible = "samsung,exynosautov9";
@@ -256,16 +257,35 @@ syscon_fsys2: syscon@17c20000 { reg = <0x17c20000 0x1000>; }; - /* USI: UART */ - serial_0: uart@10300000 { - compatible = "samsung,exynos850-uart"; - reg = <0x10300000 0x100>; - interrupts = <GIC_SPI 345 IRQ_TYPE_LEVEL_HIGH>; - pinctrl-names = "default"; - pinctrl-0 = <&uart0_bus_dual>; + syscon_peric0: syscon@10220000 { + compatible = "samsung,exynosautov9-sysreg", "syscon"; + reg = <0x10220000 0x2000>; + }; + + usi_0: usi@103000c0 { + compatible = "samsung,exynos850-usi"; + reg = <0x103000c0 0x20>; + samsung,sysreg = <&syscon_peric0 0x1000>; + samsung,mode = <USI_V2_UART>; + samsung,clkreq-on; /* needed for UART mode */ + #address-cells = <1>; + #size-cells = <1>; + ranges; clocks = <&uart_clock>, <&uart_clock>; - clock-names = "uart", "clk_uart_baud0"; + clock-names = "pclk", "ipclk"; status = "disabled"; + + /* USI: UART */ + serial_0: serial@10300000 { + compatible = "samsung,exynos850-uart"; + reg = <0x10300000 0xc0>; + interrupts = <GIC_SPI 345 IRQ_TYPE_LEVEL_HIGH>; + pinctrl-names = "default"; + pinctrl-0 = <&uart0_bus_dual>; + clocks = <&uart_clock>, <&uart_clock>; + clock-names = "uart", "clk_uart_baud0"; + status = "disabled"; + }; }; ufs_0_phy: ufs0-phy@17e04000 {
--
2.34.1
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