video: meson: hdmi-supply regulator should be optional

Some boards don't have such a regulator, and don't need one to enable
HDMI display. Make it optional, fixing hdmi display for those boards.

Also surround the regulator code with a config check on DM_REGULATOR.

Reported-by: Mohammad Rasim <mohammad.rasim96@gmail.com>
Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Mohammad Rasim <mohammad.rasim96@gmail.com>

diff --git a/drivers/video/meson/meson_dw_hdmi.c b/drivers/video/meson/meson_dw_hdmi.c
index 7a1c060856a3b25bed58fe110ba8a082b2bda316..483c93f6b6cb50a185340e32e80f4773926661ec 100644 (file)
--- a/drivers/video/meson/meson_dw_hdmi.c
+++ b/drivers/video/meson/meson_dw_hdmi.c
@@ -361,13 +361,19 @@ static int meson_dw_hdmi_probe(struct udevice *dev)
        priv->hdmi.i2c_clk_high = 0x67;
        priv->hdmi.i2c_clk_low = 0x78;
 
+#if CONFIG_IS_ENABLED(DM_REGULATOR)
        ret = device_get_supply_regulator(dev, "hdmi-supply", &supply);
-       if (ret)
+       if (ret && ret != -ENOENT) {
+               pr_err("Failed to get HDMI regulator\n");
                return ret;
+       }
 
-       ret = regulator_set_enable(supply, true);
-       if (ret)
-               return ret;
+       if (!ret) {
+               ret = regulator_set_enable(supply, true);
+               if (ret)
+                       return ret;
+       }
+#endif
 
        ret = reset_get_bulk(dev, &resets);
        if (ret)