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authorJagan Teki <jagan@amarulasolutions.com>2019-12-22 18:52:25 +0530
committerMaxime Ripard <maxime@cerno.tech>2019-12-26 10:33:59 +0100
commit26a839b3c286060ff3a6d7b14194ae845ec5aa96 (patch)
tree0f6f067e8798c49d52df17d9b67d6bf231034de6
parentdb08ca5a64d208645301600e79f34e441e5da986 (diff)
downloadblackbird-op-linux-26a839b3c286060ff3a6d7b14194ae845ec5aa96.tar.gz
blackbird-op-linux-26a839b3c286060ff3a6d7b14194ae845ec5aa96.zip
drm/sun4i: dsi: Get the mod clock for A31
As per the user manual, look like mod clock is not mandatory for all Allwinner MIPI DSI controllers, it is connected to CLK_DSI_SCLK for A31 and not available in A64. So, add compatible check for A31 and get mod clock accordingly. Tested-by: Merlijn Wajer <merlijn@wizzup.org> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20191222132229.30276-4-jagan@amarulasolutions.com
-rw-r--r--drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
index 4e8f634cc2db..9bb3222c95b9 100644
--- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
+++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
@@ -1120,10 +1120,13 @@ static int sun6i_dsi_probe(struct platform_device *pdev)
return PTR_ERR(dsi->reset);
}
- dsi->mod_clk = devm_clk_get(dev, "mod");
- if (IS_ERR(dsi->mod_clk)) {
- dev_err(dev, "Couldn't get the DSI mod clock\n");
- return PTR_ERR(dsi->mod_clk);
+ if (of_device_is_compatible(dev->of_node,
+ "allwinner,sun6i-a31-mipi-dsi")) {
+ dsi->mod_clk = devm_clk_get(dev, "mod");
+ if (IS_ERR(dsi->mod_clk)) {
+ dev_err(dev, "Couldn't get the DSI mod clock\n");
+ return PTR_ERR(dsi->mod_clk);
+ }
}
/*
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