Messages in this thread Patch in this message | | | From | carlos.song@nxp ... | Subject | [PATCH v2 3/3] i2c: imx-lpi2c: add debug message when i2c peripheral clk doesn't work | Date | Mon, 24 Jul 2023 18:55:46 +0800 |
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From: Gao Pan <pandy.gao@nxp.com>
Output error log when i2c peripheral clk rate is 0, then directly return -EINVAL.
Fixes: a55fa9d0e42e ("i2c: imx-lpi2c: add low power i2c bus driver") Signed-off-by: Gao Pan <pandy.gao@nxp.com> Signed-off-by: Carlos Song <carlos.song@nxp.com> --- drivers/i2c/busses/i2c-imx-lpi2c.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c index e93ff3b5373c..12b4f2a89343 100644 --- a/drivers/i2c/busses/i2c-imx-lpi2c.c +++ b/drivers/i2c/busses/i2c-imx-lpi2c.c @@ -214,6 +214,11 @@ static int lpi2c_imx_config(struct lpi2c_imx_struct *lpi2c_imx) lpi2c_imx_set_mode(lpi2c_imx); clk_rate = clk_get_rate(lpi2c_imx->clks[0].clk); + if (!clk_rate) { + dev_err(&lpi2c_imx->adapter.dev, "clk_per rate is 0\n"); + return -EINVAL; + } + if (lpi2c_imx->mode == HS || lpi2c_imx->mode == ULTRA_FAST) filt = 0; else -- 2.34.1
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