From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Date: Fri, 12 Oct 2012 13:27:28 +0000 (+0300)
Subject: OMAPDSS: DSI: workaround for HSDiv problem
X-Git-Tag: firefly_0821_release~3680^2~1437^2^2~61^2~6
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7a98786caa18eaa8a5e61382a575f0b6c8e81c01;p=firefly-linux-kernel-4.4.55.git

OMAPDSS: DSI: workaround for HSDiv problem

It looks like on many OMAP versions powers for both HSClk and HSDiv to
be enabled to have a functional HSDiv.

This patch fixes the issue by forcing both powers on.

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

diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index ea5c6603a51d..e773f44b523d 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -1741,6 +1741,12 @@ int dsi_pll_init(struct platform_device *dsidev, bool enable_hsclk,
 
 	DSSDBG("PLL init\n");
 
+	/*
+	 * It seems that on many OMAPs we need to enable both to have a
+	 * functional HSDivider.
+	 */
+	enable_hsclk = enable_hsdiv = true;
+
 	if (dsi->vdds_dsi_reg == NULL) {
 		struct regulator *vdds_dsi;