[PATCH] i2c: mvtwsi: Add support for DM clocks and resets
The controller may need to have clocks/resets enabled for it to work.
Add support for this. Since the clocks/resets are optional on some
platforms (per the device tree binding), do not prevent probing the
controller if they are missing.
Signed-off-by: Samuel Holland
---
drivers/i2c/mvtwsi.c | 13 +
1 file changed, 13 insertions(+)
diff --git a/drivers/i2c/mvtwsi.c b/drivers/i2c/mvtwsi.c
index d33e2c7c9d8..236bfb8d8e7 100644
--- a/drivers/i2c/mvtwsi.c
+++ b/drivers/i2c/mvtwsi.c
@@ -17,7 +17,9 @@
#include
#include
#if CONFIG_IS_ENABLED(DM_I2C)
+#include
#include
+#include
#endif
DECLARE_GLOBAL_DATA_PTR;
@@ -835,7 +837,18 @@ static int mvtwsi_i2c_bind(struct udevice *bus)
static int mvtwsi_i2c_probe(struct udevice *bus)
{
struct mvtwsi_i2c_dev *dev = dev_get_priv(bus);
+ struct reset_ctl reset;
+ struct clk clk;
uint actual_speed;
+ int ret;
+
+ ret = reset_get_by_index(bus, 0, &reset);
+ if (!ret)
+ reset_deassert(&reset);
+
+ ret = clk_get_by_index(bus, 0, &clk);
+ if (!ret)
+ clk_enable(&clk);
__twsi_i2c_init(dev->base, dev->speed, dev->slaveadd, &actual_speed);
dev->speed = actual_speed;
--
2.31.1
Re: [PATCH] i2c: mvtwsi: Add support for DM clocks and resets
Hello Samuel, On 21.09.21 06:43, Heiko Schocher wrote: > Hello Samuel, > > On 12.09.21 17:21, Samuel Holland wrote: >> The controller may need to have clocks/resets enabled for it to work. >> Add support for this. Since the clocks/resets are optional on some >> platforms (per the device tree binding), do not prevent probing the >> controller if they are missing. >> >> Signed-off-by: Samuel Holland >> --- >> >> drivers/i2c/mvtwsi.c | 13 + >> 1 file changed, 13 insertions(+) > > Reviewed-by: Heiko Schocher Applied to u-boot-i2c next Thanks! bye, Heiko > > bye, > Heiko > -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-52 Fax: +49-8142-66989-80 Email: h...@denx.de
Re: [PATCH] i2c: mvtwsi: Add support for DM clocks and resets
Hello Samuel, On 12.09.21 17:21, Samuel Holland wrote: > The controller may need to have clocks/resets enabled for it to work. > Add support for this. Since the clocks/resets are optional on some > platforms (per the device tree binding), do not prevent probing the > controller if they are missing. > > Signed-off-by: Samuel Holland > --- > > drivers/i2c/mvtwsi.c | 13 + > 1 file changed, 13 insertions(+) Reviewed-by: Heiko Schocher bye, Heiko -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-52 Fax: +49-8142-66989-80 Email: h...@denx.de
