i2c: meson: use i2c core for DT clock-frequency parsing
We don't have to parse the DT manually to retrieve the bus frequency
and we don't have to maintain an own default for the bus frequency.
Let the i2c core do this for us.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
diff --git a/drivers/i2c/busses/i2c-meson.c b/drivers/i2c/busses/i2c-meson.c
index a692594..852db0f 100644
--- a/drivers/i2c/busses/i2c-meson.c
+++ b/drivers/i2c/busses/i2c-meson.c
@@ -38,7 +38,6 @@
#define REG_CTRL_CLKDIV_MASK ((BIT(10) - 1) << REG_CTRL_CLKDIV_SHIFT)
#define I2C_TIMEOUT_MS 500
-#define DEFAULT_FREQ 100000
enum {
TOKEN_END = 0,
@@ -387,15 +386,14 @@
struct device_node *np = pdev->dev.of_node;
struct meson_i2c *i2c;
struct resource *mem;
- u32 freq;
+ struct i2c_timings timings;
int irq, ret = 0;
i2c = devm_kzalloc(&pdev->dev, sizeof(struct meson_i2c), GFP_KERNEL);
if (!i2c)
return -ENOMEM;
- if (of_property_read_u32(pdev->dev.of_node, "clock-frequency", &freq))
- freq = DEFAULT_FREQ;
+ i2c_parse_fw_timings(&pdev->dev, &timings, true);
i2c->dev = &pdev->dev;
platform_set_drvdata(pdev, i2c);
@@ -452,7 +450,7 @@
return ret;
}
- meson_i2c_set_clk_div(i2c, freq);
+ meson_i2c_set_clk_div(i2c, timings.bus_freq_hz);
return 0;
}