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drm/sun4i: dsi: Get the mod clock for A31

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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
This commit is contained in:
Jagan Teki 2019-12-22 18:52:25 +05:30 committed by Maxime Ripard
parent db08ca5a64
commit 26a839b3c2
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GPG Key ID: E3EF0D6F671851C5
1 changed files with 7 additions and 4 deletions
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11
drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
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@ -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);
}
}
/*