Commit 3159d41d authored Apr 22, 2020 by Dmytro Laktyushkin Committed by Alex Deucher Apr 28, 2020

drm/amd/display: check if REFCLK_CNTL register is present



Check before programming the register since it isn't present on
all IPs using this code.

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Eric Bernstein <Eric.Bernstein@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 9017a489

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -2294,6 +2294,7 @@ void dcn20_fpga_init_hw(struct dc *dc)

		REG_UPDATE(DCHUBBUB_GLOBAL_TIMER_CNTL, DCHUBBUB_GLOBAL_TIMER_REFDIV, 2);
		REG_UPDATE(DCHUBBUB_GLOBAL_TIMER_CNTL, DCHUBBUB_GLOBAL_TIMER_ENABLE, 1);
		if (REG(REFCLK_CNTL))
		REG_WRITE(REFCLK_CNTL, 0);
		//

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