@@ -17,6 +17,11 @@ / {
compatible = "qcom,sa8540p-ride", "qcom,sa8540p";
aliases {
+ i2c0 = &i2c0;
+ i2c1 = &i2c1;
+ i2c12 = &i2c12;
+ i2c15 = &i2c15;
+ i2c18 = &i2c18;
serial0 = &uart17;
};
@@ -146,6 +151,41 @@ vreg_l8g: ldo8 {
};
};
+&i2c0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_default>;
+
+ status = "okay";
+};
+
+&i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c1_default>;
+
+ status = "okay";
+};
+
+&i2c12 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c12_default>;
+
+ status = "okay";
+};
+
+&i2c15 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c15_default>;
+
+ status = "okay";
+};
+
+&i2c18 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c18_default>;
+
+ status = "okay";
+};
+
&pcie2a {
ranges = <0x01000000 0x0 0x3c200000 0x0 0x3c200000 0x0 0x100000>,
<0x02000000 0x0 0x3c300000 0x0 0x3c300000 0x0 0x1d00000>,
@@ -188,6 +228,14 @@ &pcie3a_phy {
status = "okay";
};
+&qup0 {
+ status = "okay";
+};
+
+&qup1 {
+ status = "okay";
+};
+
&qup2 {
status = "okay";
};
@@ -268,6 +316,41 @@ &xo_board_clk {
/* PINCTRL */
&tlmm {
+ i2c0_default: i2c0-default-state {
+ pins = "gpio135", "gpio136";
+ function = "qup15";
+ drive-strength = <2>;
+ bias-pull-up;
+ };
+
+ i2c1_default: i2c1-default-state {
+ pins = "gpio158", "gpio159";
+ function = "qup15";
+ drive-strength = <2>;
+ bias-pull-up;
+ };
+
+ i2c12_default: i2c12-default-state {
+ pins = "gpio0", "gpio1";
+ function = "qup15";
+ drive-strength = <2>;
+ bias-pull-up;
+ };
+
+ i2c15_default: i2c15-default-state {
+ pins = "gpio36", "gpio37";
+ function = "qup15";
+ drive-strength = <2>;
+ bias-pull-up;
+ };
+
+ i2c18_default: i2c18-default-state {
+ pins = "gpio66", "gpio67";
+ function = "qup18";
+ drive-strength = <2>;
+ bias-pull-up;
+ };
+
pcie2a_default: pcie2a-default-state {
perst-pins {
pins = "gpio143";
Add the necessary nodes in order to get i2c0, i2c1, i2c12, i2c15, and i2c18 functioning on the automotive board and exposed to userspace. This work was derived from various patches that Qualcomm delivered to Red Hat in a downstream kernel. This change was validated by using i2c-tools 4.3.3 on CentOS Stream 9: [root@localhost ~]# i2cdetect -l i2c-0 i2c Geni-I2C I2C adapter i2c-1 i2c Geni-I2C I2C adapter i2c-12 i2c Geni-I2C I2C adapter i2c-15 i2c Geni-I2C I2C adapter i2c-18 i2c Geni-I2C I2C adapter [root@localhost ~]# i2cdetect -a -y 15 Warning: Can't use SMBus Quick Write command, will skip some addresses 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: 10: 20: 30: -- -- -- -- -- -- -- -- 40: 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: 70: Signed-off-by: Brian Masney <bmasney@redhat.com> Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> Tested-by: Shazad Hussain <quic_shazhuss@quicinc.com> --- Changes from v2 to v3 - Added Konrad's R-b and Shazad's T-b Changes from v1 to v2 - Dropped qupX_ prefix from labels. (Johan) - Reordered nodes based on new name. - Added i2c buses 0, 1, and 12 (Shazad) - Drop mux/config-pins and have the pin properties live directly under the i2cX-default-state node. (Konrad) - Use decimal notation for drive strength (Johan) arch/arm64/boot/dts/qcom/sa8540p-ride.dts | 83 +++++++++++++++++++++++ 1 file changed, 83 insertions(+)