From e5c762f5a7dbeaa21870720e8daf656153e1aef9 Mon Sep 17 00:00:00 2001 From: Mario Six Date: Wed, 28 Mar 2018 14:37:44 +0200 Subject: [PATCH] i2c: fsl: Add option to get clock from DT Add an option to get the clock speed from the device tree, hence adding compatibility with DM clock drivers. Signed-off-by: Mario Six --- drivers/i2c/fsl_i2c.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/fsl_i2c.c b/drivers/i2c/fsl_i2c.c index ad8eea4..450a91d 100644 --- a/drivers/i2c/fsl_i2c.c +++ b/drivers/i2c/fsl_i2c.c @@ -12,6 +12,7 @@ #include /* Functional interface */ #include #include /* HW definitions */ +#include #include #include @@ -573,6 +574,7 @@ static int fsl_i2c_set_bus_speed(struct udevice *bus, uint speed) static int fsl_i2c_ofdata_to_platdata(struct udevice *bus) { struct fsl_i2c_dev *dev = dev_get_priv(bus); + struct clk clock; dev->base = map_sysmem(dev_read_addr(bus), sizeof(struct fsl_i2c_base)); @@ -584,7 +586,11 @@ static int fsl_i2c_ofdata_to_platdata(struct udevice *bus) 0x7f); dev->speed = dev_read_u32_default(bus, "clock-frequency", 400000); - dev->i2c_clk = dev->index ? gd->arch.i2c2_clk : gd->arch.i2c1_clk; + if (!clk_get_by_index(bus, 0, &clock)) + dev->i2c_clk = clk_get_rate(&clock); + else + dev->i2c_clk = dev->index ? gd->arch.i2c2_clk : + gd->arch.i2c1_clk; return 0; }