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[问答]

请问LVDSL1的管腿可以用作GPIO吗

1、EMMC核心板SPI0无法用，底版用SPI1，如何修改设备树？
2、LVDSL 我用单通道LVDSL0， LVDSL1的管腿可以用作GPIO吗？

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宋晓媛

2021-12-31 14:00:05

SPI1的地址不知道哇！是多少？
spi0: spi@05010000 {

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李四民

2021-12-31 14:00:35

您可以在设备树里可以查看：
OKT507-linux-sdk/kernel/linux-4.9/arch/arm64/boot/dts/sunxi/sun50iw9p1.dtsi

1165 spi0: spi@05010000 {
1166 #address-cells = <1>;
1167 #size-cells = <0>;
1168 compatible = "allwinner,sun50i-spi";
1169 device_type = "spi0";
1170 reg = <0x0 0x05010000 0x0 0x1000>;
1171 interrupts = ;
1172 clocks = <&clk_pll_periph0>, <&clk_spi0>;
1173 clock-frequency = <100000000>;
1174 pinctrl-names = "default", "sleep";
1175 pinctrl-0 = <&spi0_pins_a &spi0_pins_b>;
1176 pinctrl-1 = <&spi0_pins_c>;
1177 spi0_cs_number = <1>;
1178 spi0_cs_bitmap = <1>;
1179 status = "disabled";
1180 };
1181
1182 spi1: spi@05011000 {
1183 #address-cells = <1>;
1184 #size-cells = <0>;
1185 compatible = "allwinner,sun50i-spi";
1186 device_type = "spi1";
1187 reg = <0x0 0x05011000 0x0 0x1000>;
1188 interrupts = ;
1189 clocks = <&clk_pll_periph0>, <&clk_spi1>;
1190 clock-frequency = <100000000>;
1191 pinctrl-names = "default", "sleep";
1192 pinctrl-0 = <&spi1_pins_a &spi1_pins_b>;
1193 pinctrl-1 = <&spi1_pins_c>;
1194 spi1_cs_number = <1>;
1195 spi1_cs_bitmap = <1>;
1196 status = "disabled";
1197 };

您可以在设备树里可以查看：
OKT507-linux-sdk/kernel/linux-4.9/arch/arm64/boot/dts/sunxi/sun50iw9p1.dtsi

1165 spi0: spi@05010000 {
1166 #address-cells = <1>;
1167 #size-cells = <0>;
1168 compatible = "allwinner,sun50i-spi";
1169 device_type = "spi0";
1170 reg = <0x0 0x05010000 0x0 0x1000>;
1171 interrupts = ;
1172 clocks = <&clk_pll_periph0>, <&clk_spi0>;
1173 clock-frequency = <100000000>;
1174 pinctrl-names = "default", "sleep";
1175 pinctrl-0 = <&spi0_pins_a &spi0_pins_b>;
1176 pinctrl-1 = <&spi0_pins_c>;
1177 spi0_cs_number = <1>;
1178 spi0_cs_bitmap = <1>;
1179 status = "disabled";
1180 };
1181
1182 spi1: spi@05011000 {
1183 #address-cells = <1>;
1184 #size-cells = <0>;
1185 compatible = "allwinner,sun50i-spi";
1186 device_type = "spi1";
1187 reg = <0x0 0x05011000 0x0 0x1000>;
1188 interrupts = ;
1189 clocks = <&clk_pll_periph0>, <&clk_spi1>;
1190 clock-frequency = <100000000>;
1191 pinctrl-names = "default", "sleep";
1192 pinctrl-0 = <&spi1_pins_a &spi1_pins_b>;
1193 pinctrl-1 = <&spi1_pins_c>;
1194 spi1_cs_number = <1>;
1195 spi1_cs_bitmap = <1>;
1196 status = "disabled";
1197 };

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