diff options
Diffstat (limited to 'target/linux/mediatek/patches-5.15/855-pending-i2c-mt65xx-add-additional-clocks.patch')
| -rw-r--r-- | target/linux/mediatek/patches-5.15/855-pending-i2c-mt65xx-add-additional-clocks.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-5.15/855-pending-i2c-mt65xx-add-additional-clocks.patch b/target/linux/mediatek/patches-5.15/855-pending-i2c-mt65xx-add-additional-clocks.patch new file mode 100644 index 0000000000..1ed8d1a96a --- /dev/null +++ b/target/linux/mediatek/patches-5.15/855-pending-i2c-mt65xx-add-additional-clocks.patch @@ -0,0 +1,55 @@ +From 94bf61df9201195d6d8ce82e299fb231b31fbaae Mon Sep 17 00:00:00 2001 +From: Daniel Golle <daniel@makrotopia.org> +Date: Fri, 26 May 2023 10:29:45 +0100 +Subject: [PATCH] i2c: mt65xx: add additional clocks + +On MT7981 additional clocks are required when accessing I2C registers. +Add MCK and PCK optional clocks to i2c-mt65xx driver so we don't have +to always have them enabled, but really only if I2C is used. + +Signed-off-by: Daniel Golle <daniel@makrotopia.org> +--- + drivers/i2c/busses/i2c-mt65xx.c | 14 +++++++++++++- + 1 file changed, 13 insertions(+), 1 deletion(-) + +--- a/drivers/i2c/busses/i2c-mt65xx.c ++++ b/drivers/i2c/busses/i2c-mt65xx.c +@@ -93,6 +93,8 @@ + * @I2C_MT65XX_CLK_DMA: DMA clock for i2c via DMA + * @I2C_MT65XX_CLK_PMIC: PMIC clock for i2c from PMIC + * @I2C_MT65XX_CLK_ARB: Arbitrator clock for i2c ++ * @I2C_MT65XX_CLK_MCK: MCK clock for i2c ++ * @I2C_MT65XX_CLK_PCK: PCK clock for i2c + * @I2C_MT65XX_CLK_MAX: Number of supported clocks + */ + enum i2c_mt65xx_clks { +@@ -100,11 +102,13 @@ enum i2c_mt65xx_clks { + I2C_MT65XX_CLK_DMA, + I2C_MT65XX_CLK_PMIC, + I2C_MT65XX_CLK_ARB, ++ I2C_MT65XX_CLK_MCK, ++ I2C_MT65XX_CLK_PCK, + I2C_MT65XX_CLK_MAX + }; + + static const char * const i2c_mt65xx_clk_ids[I2C_MT65XX_CLK_MAX] = { +- "main", "dma", "pmic", "arb" ++ "main", "dma", "pmic", "arb", "mck", "pck" + }; + + enum DMA_REGS_OFFSET { +@@ -1444,6 +1448,14 @@ 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_MCK].clk = devm_clk_get_optional(&pdev->dev, "mck"); ++ if (IS_ERR(i2c->clocks[I2C_MT65XX_CLK_MCK].clk)) ++ return PTR_ERR(i2c->clocks[I2C_MT65XX_CLK_MCK].clk); ++ ++ i2c->clocks[I2C_MT65XX_CLK_PCK].clk = devm_clk_get_optional(&pdev->dev, "pck"); ++ if (IS_ERR(i2c->clocks[I2C_MT65XX_CLK_PCK].clk)) ++ return PTR_ERR(i2c->clocks[I2C_MT65XX_CLK_PCK].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)) { |