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| author | Daniel Golle <daniel@makrotopia.org> | 2023-08-26 22:26:37 +0100 |
|---|---|---|
| committer | Daniel Golle <daniel@makrotopia.org> | 2023-09-04 23:00:34 +0100 |
| commit | 5a9720945fa0c4d5e15df32d63e4c78f90cd2a7e (patch) | |
| tree | ee6e5e7af41028ee377965407c9903a6414991e0 /target/linux/mediatek | |
| parent | 88c12d6632fd7ec6de3b0640213d9c7d5dc63a6b (diff) | |
| download | upstream-5a9720945fa0c4d5e15df32d63e4c78f90cd2a7e.tar.gz upstream-5a9720945fa0c4d5e15df32d63e4c78f90cd2a7e.tar.bz2 upstream-5a9720945fa0c4d5e15df32d63e4c78f90cd2a7e.zip | |
mediatek: 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>
(cherry picked from commit 2544dc34f2a6e5721096ee62efa66d36d45b2dd1)
Diffstat (limited to 'target/linux/mediatek')
| -rw-r--r-- | target/linux/mediatek/patches-5.15/855-i2c-mt65xx-allow-optional-pmic-clock.patch | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-5.15/855-i2c-mt65xx-allow-optional-pmic-clock.patch b/target/linux/mediatek/patches-5.15/855-i2c-mt65xx-allow-optional-pmic-clock.patch new file mode 100644 index 0000000000..69cc155d8d --- /dev/null +++ b/target/linux/mediatek/patches-5.15/855-i2c-mt65xx-allow-optional-pmic-clock.patch @@ -0,0 +1,45 @@ +From 3bf827929a44c17bfb1bf1000b143c02ce26a929 Mon Sep 17 00:00:00 2001 +From: Daniel Golle <daniel@makrotopia.org> +Date: Sat, 26 Aug 2023 21:56:51 +0100 +Subject: [PATCH] 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> +--- + drivers/i2c/busses/i2c-mt65xx.c | 12 ++++++++---- + 1 file changed, 8 insertions(+), 4 deletions(-) + +--- a/drivers/i2c/busses/i2c-mt65xx.c ++++ b/drivers/i2c/busses/i2c-mt65xx.c +@@ -1444,15 +1444,19 @@ static int mtk_i2c_probe(struct platform + 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; + } + |