[PATCH V2] media: i2c: ov13858: Define macro for EXTCLK frequency

[Sunny Patel <nueralspacetech@gmail.com>]

Defines a macro `OV13858_EXTCLK` for the clock frequency (19.2 MHz)
and use it instead of the hardcoded value in the probe function.

Signed-off-by: Sunny Patel <nueralspacetech@gmail.com>

Thanks for the feedback. I have revised the commit message to use
correct terminology

---
 drivers/media/i2c/ov13858.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/i2c/ov13858.c b/drivers/media/i2c/ov13858.c
index 7a3fc1d28514..a1242a90cdc9 100644
--- a/drivers/media/i2c/ov13858.c
+++ b/drivers/media/i2c/ov13858.c
@@ -21,6 +21,8 @@
 #define OV13858_REG_SOFTWARE_RST	0x0103
 #define OV13858_SOFTWARE_RST		0x01
 
+#define OV13858_MCLK				19200000
+
 /* PLL1 generates PCLK and MIPI_PHY_CLK */
 #define OV13858_REG_PLL1_CTRL_0		0x0300
 #define OV13858_REG_PLL1_CTRL_1		0x0301
@@ -1664,7 +1666,7 @@ static int ov13858_probe(struct i2c_client *client)
 	u32 val = 0;
 
 	device_property_read_u32(&client->dev, "clock-frequency", &val);
-	if (val != 19200000)
+	if (val != OV13858_MCLK)
 		return -EINVAL;
 
 	ov13858 = devm_kzalloc(&client->dev, sizeof(*ov13858), GFP_KERNEL);
-- 
2.43.0