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mediatek: enable sel_clk for spi-mt65xx

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Without explicitly enabling sel_clk, clk_disable_unused() will disable
it when boot is done, causing CPU hang on SPI1 register access on MT7986.
Explicitly enable sel_clk to make SPI1 functional.

Signed-off-by: Furong Xu <xfr@outlook.com>
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
This commit is contained in:
Furong Xu 2022-12-16 21:13:37 +08:00 committed by Chuanhong Guo
parent 9e2c01e4a6
commit 335c1e7cfd
1 changed files with 29 additions and 0 deletions
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29
target/linux/mediatek/patches-5.15/930-spi-mt65xx-enable-sel-clk.patch Normal file
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@ -0,0 +1,29 @@
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -1223,10 +1223,16 @@ static int mtk_spi_probe(struct platform
goto err_disable_spi_hclk;
}
+ ret = clk_prepare_enable(mdata->sel_clk);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to enable sel_clk (%d)\n", ret);
+ goto err_disable_spi_clk;
+ }
+
ret = clk_set_parent(mdata->sel_clk, mdata->parent_clk);
if (ret < 0) {
dev_err(&pdev->dev, "failed to clk_set_parent (%d)\n", ret);
- goto err_disable_spi_clk;
+ goto err_disable_spi_sel_clk;
}
mdata->spi_clk_hz = clk_get_rate(mdata->spi_clk);
@@ -1277,6 +1283,8 @@ static int mtk_spi_probe(struct platform
err_disable_runtime_pm:
pm_runtime_disable(&pdev->dev);
+err_disable_spi_sel_clk:
+ clk_disable_unprepare(mdata->sel_clk);
err_disable_spi_clk:
clk_disable_unprepare(mdata->spi_clk);
err_disable_spi_hclk: