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Diffstat (limited to 'recipes/linux/linux-omap-pm-2.6.29/dss2/0066-DSS2-DSI-tune-the-timings-to-be-more-relaxed.patch')
-rw-r--r--recipes/linux/linux-omap-pm-2.6.29/dss2/0066-DSS2-DSI-tune-the-timings-to-be-more-relaxed.patch92
1 files changed, 92 insertions, 0 deletions
diff --git a/recipes/linux/linux-omap-pm-2.6.29/dss2/0066-DSS2-DSI-tune-the-timings-to-be-more-relaxed.patch b/recipes/linux/linux-omap-pm-2.6.29/dss2/0066-DSS2-DSI-tune-the-timings-to-be-more-relaxed.patch
new file mode 100644
index 0000000000..a3af90d959
--- /dev/null
+++ b/recipes/linux/linux-omap-pm-2.6.29/dss2/0066-DSS2-DSI-tune-the-timings-to-be-more-relaxed.patch
@@ -0,0 +1,92 @@
+From 0201b40018d9e264f8c4ea7871223c94e0de61b1 Mon Sep 17 00:00:00 2001
+From: Tomi Valkeinen <tomi.valkeinen@nokia.com>
+Date: Thu, 7 May 2009 14:32:55 +0300
+Subject: [PATCH 66/69] DSS2: DSI: tune the timings to be more relaxed
+
+Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
+---
+ drivers/video/omap2/dss/dsi.c | 37 +++++++++++++++++++++----------------
+ 1 files changed, 21 insertions(+), 16 deletions(-)
+
+diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
+index 5225ed6..67ecfcf 100644
+--- a/drivers/video/omap2/dss/dsi.c
++++ b/drivers/video/omap2/dss/dsi.c
+@@ -1396,28 +1396,28 @@ static void dsi_complexio_timings(void)
+ /* 1 * DDR_CLK = 2 * UI */
+
+ /* min 40ns + 4*UI max 85ns + 6*UI */
+- ths_prepare = ns2ddr(59) + 2;
++ ths_prepare = ns2ddr(70) + 2;
+
+ /* min 145ns + 10*UI */
+- ths_prepare_ths_zero = ns2ddr(145) + 5;
++ ths_prepare_ths_zero = ns2ddr(175) + 2;
+
+ /* min max(8*UI, 60ns+4*UI) */
+- ths_trail = max((unsigned)4, ns2ddr(60) + 2);
++ ths_trail = ns2ddr(60) + 5;
+
+ /* min 100ns */
+- ths_exit = ns2ddr(100);
++ ths_exit = ns2ddr(145);
+
+ /* tlpx min 50n */
+ tlpx_half = ns2ddr(25);
+
+ /* min 60ns */
+- tclk_trail = ns2ddr(60);
++ tclk_trail = ns2ddr(60) + 2;
+
+ /* min 38ns, max 95ns */
+- tclk_prepare = ns2ddr(38);
++ tclk_prepare = ns2ddr(65);
+
+ /* min tclk-prepare + tclk-zero = 300ns */
+- tclk_zero = ns2ddr(300 - 38);
++ tclk_zero = ns2ddr(260);
+
+ DSSDBG("ths_prepare %u (%uns), ths_prepare_ths_zero %u (%uns)\n",
+ ths_prepare, ddr2ns(ths_prepare),
+@@ -2340,9 +2340,19 @@ static void dsi_proto_timings(struct omap_display *display)
+ /* min 60ns + 52*UI */
+ tclk_post = ns2ddr(60) + 26;
+
++ /* ths_eot is 2 for 2 datalanes and 4 for 1 datalane */
++ if (display->hw_config.u.dsi.data1_lane != 0 &&
++ display->hw_config.u.dsi.data2_lane != 0)
++ ths_eot = 2;
++ else
++ ths_eot = 4;
++
+ ddr_clk_pre = DIV_ROUND_UP(tclk_pre + tlpx + tclk_zero + tclk_prepare,
+ 4);
+- ddr_clk_post = DIV_ROUND_UP(tclk_post + tclk_trail, 4);
++ ddr_clk_post = DIV_ROUND_UP(tclk_post + tclk_trail, 4) + ths_eot;
++
++ BUG_ON(ddr_clk_pre == 0 || ddr_clk_pre > 255);
++ BUG_ON(ddr_clk_post == 0 || ddr_clk_post > 255);
+
+ r = dsi_read_reg(DSI_CLK_TIMING);
+ r = FLD_MOD(r, ddr_clk_pre, 15, 8);
+@@ -2353,14 +2363,9 @@ static void dsi_proto_timings(struct omap_display *display)
+ ddr_clk_pre,
+ ddr_clk_post);
+
+- /* ths_eot is 2 for 2 datalanes and 4 for 1 datalane */
+- if (display->hw_config.u.dsi.data1_lane != 0 &&
+- display->hw_config.u.dsi.data2_lane != 0)
+- ths_eot = 2;
+- else
+- ths_eot = 4;
+-
+- enter_hs_mode_lat = DIV_ROUND_UP(tlpx + ths_prepare + ths_zero, 4) + 4;
++ enter_hs_mode_lat = 1 + DIV_ROUND_UP(tlpx, 4) +
++ DIV_ROUND_UP(ths_prepare, 4) +
++ DIV_ROUND_UP(ths_zero + 3, 4);
+ exit_hs_mode_lat = DIV_ROUND_UP(ths_trail + ths_exit, 4) + 1 + ths_eot;
+
+ r = FLD_VAL(enter_hs_mode_lat, 31, 16) |
+--
+1.6.2.4
+