Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1456123
| From | Bibby Hsieh <bibby.hsieh@mediatek.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v3 3/3] drm/mediatek: fix the wrong pixel clock when resolution is 4K |
| Date | 2016-08-04 04:50 +0200 |
| Message-ID | <s2gTo-2O7-7@gated-at.bofh.it> (permalink) |
| References | <s2gTn-2O7-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Junzhi Zhao <junzhi.zhao@mediatek.com> Pixel clock should be 297MHz when resolution is 4K. Signed-off-by: Junzhi Zhao <junzhi.zhao@mediatek.com> Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com> --- drivers/gpu/drm/mediatek/mtk_dpi.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index d05ca79..a90af59 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -438,10 +438,14 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi, } pix_rate = 1000UL * mode->clock; - if (mode->clock <= 74000) + if (mode->clock <= 27000) + factor = 16 * 3; + else if (mode->clock <= 74250) factor = 8 * 3; - else + else if (mode->clock <= 167000) factor = 4 * 3; + else + factor = 2 * 3; pll_rate = pix_rate * factor; dev_dbg(dpi->dev, "Want PLL %lu Hz, pixel clock %lu Hz\n", -- 1.7.9.5
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[PATCH v3 0/3] MT8173 HDMI 4K support Bibby Hsieh <bibby.hsieh@mediatek.com> - 2016-08-04 04:50 +0200 [PATCH v3 1/3] drm/mediatek: do mtk_hdmi_send_infoframe after HDMI clock enable Bibby Hsieh <bibby.hsieh@mediatek.com> - 2016-08-04 04:50 +0200 [PATCH v3 3/3] drm/mediatek: fix the wrong pixel clock when resolution is 4K Bibby Hsieh <bibby.hsieh@mediatek.com> - 2016-08-04 04:50 +0200 [PATCH v3 2/3] drm/mediatek: enhance the HDMI driving current Bibby Hsieh <bibby.hsieh@mediatek.com> - 2016-08-04 04:50 +0200
csiph-web