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56 lines
2.0 KiB
Diff
56 lines
2.0 KiB
Diff
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From 94bf61df9201195d6d8ce82e299fb231b31fbaae Mon Sep 17 00:00:00 2001
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From: Daniel Golle <daniel@makrotopia.org>
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Date: Fri, 26 May 2023 10:29:45 +0100
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Subject: [PATCH] i2c: mt65xx: add additional clocks
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On MT7981 additional clocks are required when accessing I2C registers.
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Add MCK and PCK optional clocks to i2c-mt65xx driver so we don't have
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to always have them enabled, but really only if I2C is used.
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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drivers/i2c/busses/i2c-mt65xx.c | 14 +++++++++++++-
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1 file changed, 13 insertions(+), 1 deletion(-)
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--- a/drivers/i2c/busses/i2c-mt65xx.c
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+++ b/drivers/i2c/busses/i2c-mt65xx.c
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@@ -93,6 +93,8 @@
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* @I2C_MT65XX_CLK_DMA: DMA clock for i2c via DMA
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* @I2C_MT65XX_CLK_PMIC: PMIC clock for i2c from PMIC
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* @I2C_MT65XX_CLK_ARB: Arbitrator clock for i2c
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+ * @I2C_MT65XX_CLK_MCK: MCK clock for i2c
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+ * @I2C_MT65XX_CLK_PCK: PCK clock for i2c
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* @I2C_MT65XX_CLK_MAX: Number of supported clocks
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*/
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enum i2c_mt65xx_clks {
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@@ -100,11 +102,13 @@ enum i2c_mt65xx_clks {
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I2C_MT65XX_CLK_DMA,
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I2C_MT65XX_CLK_PMIC,
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I2C_MT65XX_CLK_ARB,
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+ I2C_MT65XX_CLK_MCK,
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+ I2C_MT65XX_CLK_PCK,
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I2C_MT65XX_CLK_MAX
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};
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static const char * const i2c_mt65xx_clk_ids[I2C_MT65XX_CLK_MAX] = {
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- "main", "dma", "pmic", "arb"
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+ "main", "dma", "pmic", "arb", "mck", "pck"
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};
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enum DMA_REGS_OFFSET {
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@@ -1444,6 +1448,14 @@ static int mtk_i2c_probe(struct platform
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if (IS_ERR(i2c->clocks[I2C_MT65XX_CLK_ARB].clk))
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return PTR_ERR(i2c->clocks[I2C_MT65XX_CLK_ARB].clk);
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+ i2c->clocks[I2C_MT65XX_CLK_MCK].clk = devm_clk_get_optional(&pdev->dev, "mck");
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+ if (IS_ERR(i2c->clocks[I2C_MT65XX_CLK_MCK].clk))
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+ return PTR_ERR(i2c->clocks[I2C_MT65XX_CLK_MCK].clk);
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+
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+ i2c->clocks[I2C_MT65XX_CLK_PCK].clk = devm_clk_get_optional(&pdev->dev, "pck");
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+ if (IS_ERR(i2c->clocks[I2C_MT65XX_CLK_PCK].clk))
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+ return PTR_ERR(i2c->clocks[I2C_MT65XX_CLK_PCK].clk);
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+
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if (i2c->have_pmic) {
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i2c->clocks[I2C_MT65XX_CLK_PMIC].clk = devm_clk_get(&pdev->dev, "pmic");
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if (IS_ERR(i2c->clocks[I2C_MT65XX_CLK_PMIC].clk)) {
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