msm8953之spi配置

2022-11-02 15:30:07 浏览数 (1)

//=========================================== spi5 msm8953.dtsi

aliases {

spi5 = &spi_5; };

spi_5: spi@7af5000 { /* BLSP1 QUP5 */ compatible = “qcom,spi-qup-v2”; #address-cells = <1>; #size-cells = <0>; reg-names = “spi_physical”, “spi_bam_physical”; reg = <0x7af5000 0x600>, <0x7ac4000 0x1f000>; interrupt-names = “spi_irq”, “spi_bam_irq”; interrupts = <0 299 0>, <0 239 0>; spi-max-frequency = <19200000>; pinctrl-names = “spi_default”, “spi_sleep”; pinctrl-0 = <&spi5_default &spi5_cs0_active>; pinctrl-1 = <&spi5_sleep &spi5_cs0_sleep>; clocks = <&clock_gcc clk_gcc_blsp2_ahb_clk>, <&clock_gcc clk_gcc_blsp2_qup1_spi_apps_clk>; clock-names = “iface_clk”, “core_clk”; qcom,infinite-mode = <0>; qcom,use-bam; qcom,use-pinctrl; qcom,ver-reg-exists; qcom,bam-consumer-pipe-index = <4>; qcom,bam-producer-pipe-index = <5>; qcom,master-id = <84>; };

msm8953-pinctrl.dtsi

spi5 { spi5_default: spi5_default { /* active state */ mux { /* MOSI, MISO, CLK */ pins = “gpio16”, “gpio17”, “gpio19”; function = “blsp_spi3”; };

config { pins = “gpio16”, “gpio17”, “gpio19”; drive-strength = <12>; /* 12 MA */ bias-disable = <0>; /* No PULL */ }; };

spi5_sleep: spi5_sleep { /* suspended state */ mux { /* MOSI, MISO, CLK */ pins = “gpio16”, “gpio17”, “gpio19”; function = “gpio”; };

config { pins = “gpio16”, “gpio17”, “gpio19”; drive-strength = <2>; /* 2 MA */ bias-pull-down; /* PULL Down */ }; };

spi5_cs0_active: cs0_active { /* CS */ mux { pins = “gpio18”; function = “blsp_spi3”; };

config { pins = “gpio18”; drive-strength = <2>; bias-disable = <0>; }; };

spi5_cs0_sleep: cs0_sleep { /* CS */ mux { pins = “gpio18”; function = “gpio”; };

config { pins = “gpio18”; drive-strength = <2>; bias-disable = <0>; }; }; };

//=========================================== spi6

项目名-msm8953.dtsi aliases { spi6 = &spi_6;

};

#if 1 spi_6: spi@7af6000 { /* BLSP1 QUP6 */ compatible = “qcom,spi-qup-v2”; #address-cells = <1>; #size-cells = <0>; reg-names = “spi_physical”, “spi_bam_physical”; reg = <0x7af6000 0x600>, <0x7ac4000 0x1f000>; interrupt-names = “spi_irq”, “spi_bam_irq”; interrupts = <0 300 0>, <0 239 0>; spi-max-frequency = <19200000>; pinctrl-names = “spi_default”, “spi_sleep”; pinctrl-0 = <&spi6_default &spi6_cs0_active>; pinctrl-1 = <&spi6_sleep &spi6_cs0_sleep>; clocks = <&clock_gcc clk_gcc_blsp2_ahb_clk>, <&clock_gcc clk_gcc_blsp2_qup2_spi_apps_clk>; clock-names = “iface_clk”, “core_clk”; qcom,infinite-mode = <0>; qcom,use-bam; qcom,use-pinctrl; qcom,ver-reg-exists; qcom,bam-consumer-pipe-index = <6>; qcom,bam-producer-pipe-index = <7>; qcom,master-id = <84>; }; #endif

项目名-msm8953-pinctrl.dtsi

#if 1 spi6 { spi6_default: spi6_default { /* active state */ mux { /* MOSI, MISO, CLK */ pins = “gpio20”, “gpio21”, “gpio23”; function = “blsp_spi6”; };

config { pins = “gpio20”, “gpio21”, “gpio23”; drive-strength = <12>; /* 12 MA */ bias-disable = <0>; /* No PULL */ }; };

spi6_sleep: spi6_sleep { /* suspended state */ mux { /* MOSI, MISO, CLK */ pins = “gpio20”, “gpio21”, “gpio23”; function = “gpio”; };

config { pins = “gpio20”, “gpio21”, “gpio23”; drive-strength = <2>; /* 2 MA */ bias-pull-down; /* PULL Down */ }; };

spi6_cs0_active: cs0_active { /* CS */ mux { pins = “gpio22”; function = “blsp_spi6”; };

config { pins = “gpio22”; drive-strength = <2>; bias-disable = <0>; }; };

spi6_cs0_sleep: cs0_sleep { /* CS */ mux { pins = “gpio22”; function = “gpio”; };

config { pins = “gpio22”; drive-strength = <2>; bias-disable = <0>; }; }; }; #endif

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