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| author | Mario Six <mario.six@gdsys.cc> | 2018-03-28 14:37:44 +0200 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2018-04-11 11:34:55 +0200 |
| commit | e5c762f5a7dbeaa21870720e8daf656153e1aef9 (patch) | |
| tree | c9ce927f32314c99d660a720ed99ada67a12ec57 | |
| parent | d934832de6e62ca21c99a4fbad808175801f4018 (diff) | |
| download | u-boot-e5c762f5a7dbeaa21870720e8daf656153e1aef9.zip u-boot-e5c762f5a7dbeaa21870720e8daf656153e1aef9.tar.gz u-boot-e5c762f5a7dbeaa21870720e8daf656153e1aef9.tar.bz2 | |
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 <mario.six@gdsys.cc>
| -rw-r--r-- | drivers/i2c/fsl_i2c.c | 8 |
1 files changed, 7 insertions, 1 deletions
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 <i2c.h> /* Functional interface */ #include <asm/io.h> #include <asm/fsl_i2c.h> /* HW definitions */ +#include <clk.h> #include <dm.h> #include <mapmem.h> @@ -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; } |