OMAP: DSS2: DSI: Fix DSI PLL power bug

OMAP3630 has a HW bug causing DSI PLL power command POWER_ON_DIV (0x3)
to not work properly. The bug prevents us from enabling DSI PLL power
only to HS divider block.

This patch adds a dss feature for the bug and converts POWER_ON_DIV
requests to POWER_ON_ALL (0x2).

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index 5cf13f4b9e83..fe655b6ab2ab 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -1059,6 +1059,11 @@ static int dsi_pll_power(enum dsi_pll_power_state state)
 {
         int t = 0;
 
+        /* DSI-PLL power command 0x3 is not working */
+        if (dss_has_feature(FEAT_DSI_PLL_PWR_BUG) &&
+                        state == DSI_PLL_POWER_ON_DIV)
+                state = DSI_PLL_POWER_ON_ALL;
+
         REG_FLD_MOD(DSI_CLK_CTRL, state, 31, 30);       /* PLL_PWR_CMD */
 
         /* PLL_PWR_STATUS */