video: mxsfb: add enabling of "disp_axi" clock

Some SoC needs "disp_axi" clock to be enabled, so let's try to retrieve it
and enabling. If it fails it gives only a debug(), but this clock as well
as "axi" clock is not mandatory.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>

diff --git a/drivers/video/mxsfb.c b/drivers/video/mxsfb.c
index 147bd66..523d8a8 100644 (file)
--- a/drivers/video/mxsfb.c
+++ b/drivers/video/mxsfb.c
@@ -98,6 +98,17 @@ static void mxs_lcd_init(struct udevice *dev, u32 fb_addr,
                        return;
                }
        }
+
+       ret = clk_get_by_name(dev, "disp_axi", &clk);
+       if (!ret) {
+               debug("%s: Failed to get mxs disp_axi clk: %d\n", __func__, ret);
+       } else {
+               ret = clk_enable(&clk);
+               if (ret < 0) {
+                       dev_err(dev, "Failed to enable mxs disp_axi clk: %d\n", ret);
+                       return;
+               }
+       }
 #else
        /* Kick in the LCDIF clock */
        mxs_set_lcdclk(MXS_LCDIF_BASE, timings->pixelclock.typ / 1000);