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i2c: mt65xx: allow optional pmic clock

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Using the I2C host controller on the MT7981 SoC requires 4 clocks to
be enabled. One of them, the pmic clk, is only enabled in case
'mediatek,have-pmic' is also set which has other consequences which
are not desired in this case.

Allow defining a pmic clk even in case the 'mediatek,have-pmic' propterty
is not present and the bus is not used to connect to a pmic, but may
still require to enable the pmic clock.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Daniel Golle 2023-08-27 03:13:30 +01:00 committed by Wolfram Sang
parent 19b6ffd5f0
commit bcfaaa9711
1 changed files with 8 additions and 4 deletions
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12
drivers/i2c/busses/i2c-mt65xx.c
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@ -1442,15 +1442,19 @@ static int mtk_i2c_probe(struct platform_device *pdev)
if (IS_ERR(i2c->clocks[I2C_MT65XX_CLK_ARB].clk))
return PTR_ERR(i2c->clocks[I2C_MT65XX_CLK_ARB].clk);
i2c->clocks[I2C_MT65XX_CLK_PMIC].clk = devm_clk_get_optional(&pdev->dev, "pmic");
if (IS_ERR(i2c->clocks[I2C_MT65XX_CLK_PMIC].clk)) {
dev_err(&pdev->dev, "cannot get pmic clock\n");
return PTR_ERR(i2c->clocks[I2C_MT65XX_CLK_PMIC].clk);
}
if (i2c->have_pmic) {
i2c->clocks[I2C_MT65XX_CLK_PMIC].clk = devm_clk_get(&pdev->dev, "pmic");
if (IS_ERR(i2c->clocks[I2C_MT65XX_CLK_PMIC].clk)) {
if (!i2c->clocks[I2C_MT65XX_CLK_PMIC].clk) {
dev_err(&pdev->dev, "cannot get pmic clock\n");
return PTR_ERR(i2c->clocks[I2C_MT65XX_CLK_PMIC].clk);
return -ENODEV;
}
speed_clk = I2C_MT65XX_CLK_PMIC;
} else {
i2c->clocks[I2C_MT65XX_CLK_PMIC].clk = NULL;
speed_clk = I2C_MT65XX_CLK_MAIN;
}