Hello Lukasz,
On 05.09.2012 11:15, Lukasz Majewski wrote:
Support for multiple soft I2C buses.
Multibus I2C support is achieved by defining get_multi_{sda|scl}_pin
functions to switch between multiple "soft" I2C buses.
Common definition of I2C_X I2C buses is provided at<i2c.h>.
TEST HW:
Samsung's Exynos4210 evt.0.1 - Trats development board
Signed-off-by: Lukasz Majewski<l.majew...@samsung.com>
Signed-off-by: Kyungmin Park<kyungmin.p...@samsung.com>
Cc: Heiko Schocher<h...@denx.de>
Cc: Minkyu Kang<mk7.k...@samsung.com>
---
Changes for v2:
- Common Samsung code has been put to board/samsung/common/multi_i2c.c file
- I2C_{4|5} have been renamed to I2C_{0|1}
- *soft_i2c_name[] table has been removed
Changes for v3:
- None
Changes for v4:
- Common definitions of available I2C buses are now defined at<i2c.h>
- Compatibility layer (I2C_0) has been added temporarily to not break the Trats
I2C communication with PMIC. It will be removed when redesigned PMIC will be
posted
---
board/samsung/common/Makefile | 43 +++++++++++++++++++++++++
board/samsung/common/multi_i2c.c | 65 ++++++++++++++++++++++++++++++++++++++
include/i2c.h | 12 +++++++
3 files changed, 120 insertions(+), 0 deletions(-)
create mode 100644 board/samsung/common/Makefile
create mode 100644 board/samsung/common/multi_i2c.c
[...]
+#########################################################################
diff --git a/board/samsung/common/multi_i2c.c b/board/samsung/common/multi_i2c.c
new file mode 100644
index 0000000..d6c3d37
--- /dev/null
+++ b/board/samsung/common/multi_i2c.c
@@ -0,0 +1,65 @@
[...]
+/* Handle multiple I2C buses instances */
+int get_multi_scl_pin(void)
+{
+ unsigned int bus = I2C_GET_BUS();
+
+ switch (bus) {
+ case I2C_0: /* I2C_0 definition - compatibility layer */
+ case I2C_5:
Is this correct, that you want to use 2 i2c busses on the same pin?
Beside of that, you get my:
Acked-by: Heiko Schocher <h...@denx.de>
bye,
Heiko
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
