mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 09:12:39 +00:00
2544dc34f2
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>
46 lines
1.7 KiB
Diff
46 lines
1.7 KiB
Diff
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;
|
|
}
|
|
|