This adds the PCA9546 4-channel i2c bus switch.
Signed-off-by: Chris Packham <judge.pack...@gmail.com>
---
U-boot already supports the PCA9646 which is a pin-compatible (and
mostly register compatible) replacement. I still think it's worth making
the distinction and Linux actually supports the 9546 instead of the 9646
so u-boot will likely encounter dtses with 9546 in the compatible
string.
drivers/i2c/muxes/Kconfig | 4 ++--
drivers/i2c/muxes/pca954x.c | 6 ++++++
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/muxes/Kconfig b/drivers/i2c/muxes/Kconfig
index 68f15261be77..39683fc43b49 100644
--- 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 be90a7b24a8e..cc8afc93b5e1 100644
--- 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 },
--
2.25.1
