From 26fe45a0a76f165425f332a5aaa298f149f9db22 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 17 Jul 2012 14:02:43 -0400 Subject: [PATCH] drm/radeon: fix up pll selection on DCE5/6 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Selecting ATOM_PPLL_INVALID should be equivalent as the DCPLL or PPLL0 are already programmed for the DISPCLK, but the preferred method is to always specify the PLL selected. SetPixelClock will check the parameters and skip the programming if the PLL is already set up. Signed-off-by: Alex Deucher Reviewed-by: Christian König --- drivers/gpu/drm/radeon/atombios_crtc.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index 3904d7964a4b..bbbeb98d4bb7 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -1539,7 +1539,11 @@ static int radeon_atom_pick_pll(struct drm_crtc *crtc) * crtc virtual pixel clock. */ if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(test_encoder))) { - if (ASIC_IS_DCE5(rdev) || rdev->clock.dp_extclk) + if (ASIC_IS_DCE5(rdev)) + return ATOM_DCPLL; + else if (ASIC_IS_DCE6(rdev)) + return ATOM_PPLL0; + else if (rdev->clock.dp_extclk) return ATOM_PPLL_INVALID; } } -- 2.39.5