[U-Boot] [PATCH] i2c: Zynq: Support for TI PCA9548 bus multiplexer

[Michael Burr]

 (Interface is not quite the same as Phillips PCA9547.)

Signed-off-by: Michael Burr <michael.burr at logicpd.com>
Cc: Heiko Schocher <hs at denx.de>
Cc: Michal Simek <monstr at monstr.eu>
---
 drivers/i2c/i2c_core.c |    5 +++++
 include/i2c.h          |    2 ++
 2 files changed, 7 insertions(+)

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
-- 
1.7.9.5