Get clock rate from the clock driver instead of hard-coding it.
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com ---
drivers/i2c/i2c-uniphier-f.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/i2c/i2c-uniphier-f.c b/drivers/i2c/i2c-uniphier-f.c index eb6c9f3..6f45cc5 100644 --- a/drivers/i2c/i2c-uniphier-f.c +++ b/drivers/i2c/i2c-uniphier-f.c @@ -11,6 +11,7 @@ #include <linux/iopoll.h> #include <linux/sizes.h> #include <linux/types.h> +#include <clk.h> #include <dm.h> #include <i2c.h> #include <fdtdec.h> @@ -61,8 +62,6 @@ struct uniphier_fi2c_regs { #define I2C_BRST_RSCLO (1 << 0) /* release SCL low fixing */ };
-#define FIOCLK 50000000 - struct uniphier_fi2c_priv { struct udevice *dev; struct uniphier_fi2c_regs __iomem *regs; /* register base */ @@ -93,6 +92,8 @@ static int uniphier_fi2c_probe(struct udevice *dev) { fdt_addr_t addr; struct uniphier_fi2c_priv *priv = dev_get_priv(dev); + struct clk clk; + int ret;
addr = devfdt_get_addr(dev); if (addr == FDT_ADDR_T_NONE) @@ -102,7 +103,19 @@ static int uniphier_fi2c_probe(struct udevice *dev) if (!priv->regs) return -ENOMEM;
- priv->fioclk = FIOCLK; + ret = clk_get_by_index(dev, 0, &clk); + if (ret < 0) { + dev_err(dev, "failed to get clock\n"); + return ret; + } + + ret = clk_enable(&clk); + if (ret) { + dev_err(dev, "failed to enable clock\n"); + return ret; + } + + priv->fioclk = clk_get_rate(&clk);
priv->dev = dev;