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Groups > linux.kernel > #1486692

[PATCH 14/26] drm/rockchip: dw-mipi-dsi: fix escape clock rate

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Use the same calculation as the vendor kernel to derive the escape clock
speed.

Signed-off-by: John Keeping <john@metanate.com>
---
 drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
index 5e343b54f0d0..8854b8670d72 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
@@ -711,11 +711,13 @@ static void dw_mipi_dsi_disable(struct dw_mipi_dsi *dsi)
 
 static void dw_mipi_dsi_init(struct dw_mipi_dsi *dsi)
 {
+	u32 esc_clk_division = (dsi->lane_mbps >> 3) / 20 + 1;
+
 	dsi_write(dsi, DSI_PWR_UP, RESET);
 	dsi_write(dsi, DSI_PHY_RSTZ, PHY_DISFORCEPLL | PHY_DISABLECLK
 		  | PHY_RSTZ | PHY_SHUTDOWNZ);
 	dsi_write(dsi, DSI_CLKMGR_CFG, TO_CLK_DIVIDSION(10) |
-		  TX_ESC_CLK_DIVIDSION(7));
+		  TX_ESC_CLK_DIVIDSION(esc_clk_division));
 }
 
 static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi)
-- 
2.10.0.278.g4f427b1.dirty

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[PATCH 00/27] drm/rockchip: MIPI fixes & improvements John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 07/26] drm/rockchip: dw-mipi-dsi: avoid out-of-bounds read on tx_buf John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 15/26] drm/rockchip: dw-mipi-dsi: ensure PHY is reset John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 14/26] drm/rockchip: dw-mipi-dsi: fix escape clock rate John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 21/27] drm/rockchip: dw-mipi-dsi: improve PLL configuration John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 09/26] drm/rockchip: dw-mipi-dsi: respect message flags John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 22/26] drm/rockchip: vop: test for P{H,V}SYNC John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 18/26] drm/rockchip: dw-mipi-dsi: properly configure PHY timing John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 11/26] drm/rockchip: dw-mipi-dsi: don't assume buffer is aligned John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 15/27] drm/rockchip: dw-mipi-dsi: use positive check for N{H,V}SYNC John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 22/27] drm/rockchip: dw-mipi-dsi: defer probe if panel is not loaded John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 18/27] drm/rockchip: dw-mipi-dsi: configure bias and bandgap before enable John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 25/26] drm/rockchip: dw-mipi-dsi: add reset control John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 16/26] drm/rockchip: dw-mipi-dsi: configure bias and bandgap before enable John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  Re: [PATCH 00/27] drm/rockchip: MIPI fixes & improvements John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 02/26] drm/rockchip: dw-mipi-dsi: pass new mode into MIPI mode set John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 14/27] drm/rockchip: dw-mipi-dsi: use specific poll helper John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 20/27] drm/rockchip: dw-mipi-dsi: properly configure PHY timing John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 23/26] drm/rockchip: dw-mipi-dsi: defer probe if panel is not loaded John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 16/27] drm/rockchip: dw-mipi-dsi: fix escape clock rate John Keeping <john@metanate.com> - 2016-09-19 19:30 +0200
  [PATCH 24/26] drm/rockchip: dw-mipi-dsi: support non-burst modes John Keeping <john@metanate.com> - 2016-09-19 19:40 +0200
  [PATCH 23/27] drm/rockchip: dw-mipi-dsi: support non-burst modes John Keeping <john@metanate.com> - 2016-09-19 19:40 +0200
  [PATCH 24/27] drm/rockchip: vop: test for P{H,V}SYNC John Keeping <john@metanate.com> - 2016-09-19 19:40 +0200

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