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| author | Michael Burr <michael.burr@logicpd.com> | 2013-09-23 22:35:45 +0000 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2013-10-17 07:20:25 +0200 |
| commit | e66587495d75ad82c34e9f04af03d3c5741644d3 (patch) | |
| tree | 1d85f260218908d96c9fc6ed0f4e3ab4ae019db4 | |
| parent | b089d039b1971fc3abfe1d9bcebd0d35245fb110 (diff) | |
| download | u-boot-imx-e66587495d75ad82c34e9f04af03d3c5741644d3.zip u-boot-imx-e66587495d75ad82c34e9f04af03d3c5741644d3.tar.gz u-boot-imx-e66587495d75ad82c34e9f04af03d3c5741644d3.tar.bz2 | |
i2c: Zynq: Support for TI PCA9548 bus multiplexer
(Interface is not quite the same as Phillips PCA9547.)
Signed-off-by: Michael Burr <michael.burr@logicpd.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Michal Simek <monstr@monstr.eu>
| -rw-r--r-- | drivers/i2c/i2c_core.c | 5 | ||||
| -rw-r--r-- | include/i2c.h | 2 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/i2c/i2c_core.c b/drivers/i2c/i2c_core.c index d1072e8..b263562 100644 --- a/drivers/i2c/i2c_core.c +++ b/drivers/i2c/i2c_core.c @@ -138,6 +138,11 @@ static int i2c_mux_set(struct i2c_adapter *adap, int mux_id, int chip, return -1; buf = (uint8_t)((channel & 0x07) | (1 << 3)); break; + case I2C_MUX_PCA9548_ID: + if (channel > 7) + return -1; + buf = (uint8_t)(0x01 << channel); + break; default: printf("%s: wrong mux id: %d\n", __func__, mux_id); return -1; diff --git a/include/i2c.h b/include/i2c.h index 8fd17d1..c1be533 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -135,6 +135,8 @@ extern struct i2c_bus_hose i2c_bus[]; #define I2C_MUX_PCA9544 {I2C_MUX_PCA9544_ID, "PCA9544A"} #define I2C_MUX_PCA9547_ID 4 #define I2C_MUX_PCA9547 {I2C_MUX_PCA9547_ID, "PCA9547A"} +#define I2C_MUX_PCA9548_ID 5 +#define I2C_MUX_PCA9548 {I2C_MUX_PCA9548_ID, "PCA9548"} #endif #ifndef I2C_SOFT_DECLARATIONS |