42 lines
1.2 KiB
Diff
42 lines
1.2 KiB
Diff
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From: Ondrej Jirman <megous@megous.com>
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Date: Fri, 22 Oct 2021 18:11:26 +0200
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Subject: [PATCH 21/36] media: i2c: imx258: Don't be too strict about clock
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rate
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On Pinephone Pro, we are not able to set 19.2MHz precisely.
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Allow some slack in clock rate.
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Signed-off-by: Ondrej Jirman <megous@megous.com>
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---
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drivers/media/i2c/imx258.c | 9 +++++++--
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1 file changed, 7 insertions(+), 2 deletions(-)
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diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c
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index be5adcc..e64fadc 100644
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--- a/drivers/media/i2c/imx258.c
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+++ b/drivers/media/i2c/imx258.c
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@@ -79,7 +79,9 @@
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#define REG_CONFIG_FLIP_TEST_PATTERN 0x02
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/* Input clock frequency in Hz */
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+#define IMX258_INPUT_CLOCK_FREQ_MIN 19000000
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#define IMX258_INPUT_CLOCK_FREQ 19200000
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+#define IMX258_INPUT_CLOCK_FREQ_MAX 19400000
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struct imx258_reg {
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u16 address;
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@@ -1277,8 +1279,11 @@ static int imx258_probe(struct i2c_client *client)
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} else {
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val = clk_get_rate(imx258->clk);
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}
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- if (val != IMX258_INPUT_CLOCK_FREQ) {
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- dev_err(&client->dev, "input clock frequency not supported\n");
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+
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+ if (val < IMX258_INPUT_CLOCK_FREQ_MIN
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+ || val > IMX258_INPUT_CLOCK_FREQ_MAX) {
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+ dev_err(&client->dev, "input clock frequency %u not supported\n",
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+ val);
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return -EINVAL;
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}
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