On 09/19/2018 02:02 PM, Rafał Miłecki wrote:
> From: Rafał Miłecki <rafal@xxxxxxxxxx>
>
> This driver provides support for Northstar mux controller. It differs
> from Northstar Plus one so a new binding and driver were needed.
>
> Right now it includes support for SPI pins only which is caused by a
> lack of access to Broadcom's datasheet. SPI pins info was extracted from
> the Broadcom's SDK. Once more pins are discovered they can be added to
> the driver without breaking any existing setups.
>
> Signed-off-by: Rafał Miłecki <rafal@xxxxxxxxxx>
> ---
[snip]
> +static const struct pinctrl_pin_desc ns_pinctrl_pins[] = {
> + { 0, "spi_clk" },
> + { 1, "spi_ss" },
> + { 2, "spi_mosi" },
> + { 3, "spi_miso" },
> +};
In case you are interested, here are the additional functions:
4: i2c_scl
5: i2c_sda
6: mdc
7: mdio
8: pwm0
9: pwm1
10: pwm2
11: pwm3
12: uart1_rx
13: uart1_tx
14: uart1_cts
15: uart1_rts
On BCM53012:
16: uart2_rx
17: uart2_tx
22: sdio_card_power_ctl
23: sdio_en_1p8
On BCM53013:
21: 25Mhz crystal output for I2S
Not an expert on pinctrl drivers, but it looks reasonable to me.
--
Florian
