Commit c2ee29d0 authored Sep 13, 2013 by Alex Deucher

drm/radeon/dpm/rs780: fix force_performance state for same sclks



If the low and high sclks within a power state are the same,
there no need to enable sclk scaling.  Enabling sclk scaling
can cause display stability issues on some boards.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

parent e40210cc

drivers/gpu/drm/radeon/rs780_dpm.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -1043,8 +1043,10 @@ int rs780_dpm_force_performance_level(struct radeon_device *rdev,
		if (pi->voltage_control)
		rs780_force_voltage(rdev, pi->max_voltage);

		if (ps->sclk_high != ps->sclk_low) {
		WREG32_P(FVTHROT_FBDIV_REG1, 0, ~FORCE_FEEDBACK_DIV);
		rs780_clk_scaling_enable(rdev, true);
		}

		if (pi->voltage_control) {
		rs780_voltage_scaling_enable(rdev, true);