i2c: muxes: pca954x: add PCA9546 variant

This adds the PCA9546 4-channel i2c bus switch.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
Reviewed-by: Heiko Schocher <hs@denx.de>

diff --git a/drivers/i2c/muxes/Kconfig b/drivers/i2c/muxes/Kconfig
index 68f1526..39683fc 100644 (file)
--- a/drivers/i2c/muxes/Kconfig
+++ b/drivers/i2c/muxes/Kconfig
@@ -33,8 +33,8 @@ config I2C_MUX_PCA954x
          devices. It is x width I2C multiplexer which enables to partitioning
          I2C bus and connect multiple devices with the same address to the same
          I2C controller where driver handles proper routing to target i2c
-         device. Supported chips are PCA9543, PCA9544, PCA9547, PCA9548 and
-         PCA9646.
+         device. Supported chips are PCA9543, PCA9544, PCA9546, PCA9547,
+         PCA9548 and PCA9646.
 
 config I2C_MUX_GPIO
         tristate "GPIO-based I2C multiplexer"

diff --git a/drivers/i2c/muxes/pca954x.c b/drivers/i2c/muxes/pca954x.c
index be90a7b..cc8afc9 100644 (file)
--- a/drivers/i2c/muxes/pca954x.c
+++ b/drivers/i2c/muxes/pca954x.c
@@ -18,6 +18,7 @@ DECLARE_GLOBAL_DATA_PTR;
 enum pca_type {
        PCA9543,
        PCA9544,
+       PCA9546,
        PCA9547,
        PCA9548,
        PCA9646
@@ -48,6 +49,10 @@ static const struct chip_desc chips[] = {
                .muxtype = pca954x_ismux,
                .width = 4,
        },
+       [PCA9546] = {
+               .muxtype = pca954x_isswi,
+               .width = 4,
+       },
        [PCA9547] = {
                .enable = 0x8,
                .muxtype = pca954x_ismux,
@@ -95,6 +100,7 @@ static const struct i2c_mux_ops pca954x_ops = {
 static const struct udevice_id pca954x_ids[] = {
        { .compatible = "nxp,pca9543", .data = PCA9543 },
        { .compatible = "nxp,pca9544", .data = PCA9544 },
+       { .compatible = "nxp,pca9546", .data = PCA9546 },
        { .compatible = "nxp,pca9547", .data = PCA9547 },
        { .compatible = "nxp,pca9548", .data = PCA9548 },
        { .compatible = "nxp,pca9646", .data = PCA9646 },