pps: DR_SYNC pulse needs to be connected to Linux PPS driver (0059a879) · Commits · e / devices / android_kernel_xiaomi_markw

DR_SYNC pulse needs to be connected to Linux PPS driver for GNSS driver to receive pps_event. DR_SYNC pulse is generated by GSS firmware in modem, GNSS driver needs to receive pps_event of this pulse to get the kernel timestamp to synchronize time/data to finer quality. Change-Id: I1c686fcf6306e890cc0a5c3296cdcaff49282e2f CRs-Fixed: 1068214 Signed-off-by:

Madhanraj Chelladurai <mchellad@codeaurora.org>

arch/arm/boot/dts/qcom/msm8996-pinctrl.dtsi

+14 −0

Original line number	Diff line number	Diff line
		@@ -2972,5 +2972,19 @@
		};
		};
		};

		pinctrl_pps: ppsgrp {
		mux {
		pins = "gpio128";
		function = "nav_dr";
		};

		config {
		pins = "gpio128";
		drive-strength = <16>;
		bias-pull-down;
		};
		};

		};
		};

arch/arm/boot/dts/qcom/msm8996.dtsi

+8 −0

Original line number	Diff line number	Diff line
		@@ -3761,6 +3761,14 @@
		clock-names = "gpu_clk";
		clocks = <&clock_gpu clk_gpu_gx_gfx3d_clk>;
		};

		pps {
		compatible = "pps-gpio";
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_pps>;
		gpios = <&tlmm 128 0>;
		status = "okay";
		};
		};

		&gdsc_venus {