diff options
| author | Daniel Golle <daniel@makrotopia.org> | 2023-08-27 03:13:30 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2023-09-19 22:00:22 +0200 |
| commit | bcfaaa9711127eda1803f164ae4d790f38ff1122 (patch) | |
| tree | 6b41696b568ef469fdc01bf100998462b3573ea3 /drivers/i2c | |
| parent | 19b6ffd5f079741dadc555477375e3da59fd5c58 (diff) | |
| download | linux-bcfaaa9711127eda1803f164ae4d790f38ff1122.tar.gz | |
i2c: mt65xx: allow optional pmic clock
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>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-mt65xx.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index 1a9b5a068ef1b..a8b5719c33729 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -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; } |