Make the clock producer reference lookup optional
Add support for ACPI-based platforms by parsing the 'clock-frequency'
property when no clock producer is available
Signed-off-by: Mehdi Djait <mehdi.djait@xxxxxxxxxxxxxxx>
---
drivers/media/i2c/imx219.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c
index 2d54cea113e1..a876a6d80a47 100644
--- a/drivers/media/i2c/imx219.c
+++ b/drivers/media/i2c/imx219.c
@@ -1103,12 +1103,22 @@ static int imx219_probe(struct i2c_client *client)
"failed to initialize CCI\n");
/* Get system clock (xclk) */
- imx219->xclk = devm_clk_get(dev, NULL);
+ imx219->xclk = devm_clk_get_optional(dev, NULL);
if (IS_ERR(imx219->xclk))
return dev_err_probe(dev, PTR_ERR(imx219->xclk),
"failed to get xclk\n");
- imx219->xclk_freq = clk_get_rate(imx219->xclk);
+ if (imx219->xclk) {
+ imx219->xclk_freq = clk_get_rate(imx219->xclk);
+ } else {
+ ret = fwnode_property_read_u32(dev_fwnode(dev),
+ "clock-frequency",
+ &imx219->xclk_freq);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "failed to get clock frequency");
+ }
+
if (imx219->xclk_freq != IMX219_XCLK_FREQ)
return dev_err_probe(dev, -EINVAL,
"xclk frequency not supported: %d Hz\n",
--
2.48.1
