On Wed, Mar 20, 2019 at 08:44:09PM +0100, Geert Uytterhoeven wrote:
> Enable the I2C bus, and add the following devices:
> - Two CAT9554 port expanders (8 GPIOs, interrupt not wired by
> default),
> - R1EX24016ASAS0A EEPROM.
>
> The bus also contains a MAX9856 Audio Codec, which is not yet supported.
>
> All devices (incl. the audio codec) are documented to support an I2C bus
> running at 400 kHz.
>
> Pinctrl is based on the RZ/A BSP.
>
> Signed-off-by: Geert Uytterhoeven <[email protected]>
> ---
> Pending acceptance of the DT binding patches documenting the
> "onnn,cat9554" and "renesas,r1ex24016" compatible values.
Thanks.
I'm marking this series as deferred pending acceptance of the bindings.
Please repost or ping me once that has happened.
> ---
> arch/arm/boot/dts/r7s72100-rskrza1.dts | 33 ++++++++++++++++++++++++++
> 1 file changed, 33 insertions(+)
>
> diff --git a/arch/arm/boot/dts/r7s72100-rskrza1.dts
> b/arch/arm/boot/dts/r7s72100-rskrza1.dts
> index 8ee44a100e9a44c4..60e80ecbbf6826bc 100644
> --- a/arch/arm/boot/dts/r7s72100-rskrza1.dts
> +++ b/arch/arm/boot/dts/r7s72100-rskrza1.dts
> @@ -47,6 +47,34 @@
> clock-frequency = <13330000>;
> };
>
> +&i2c3 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&i2c3_pins>;
> + status = "okay";
> +
> + clock-frequency = <400000>;
> +
> + io_expander1: gpio@20 {
> + compatible = "onnn,cat9554";
> + reg = <0x20>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + };
> +
> + io_expander2: gpio@21 {
> + compatible = "onnn,cat9554";
> + reg = <0x21>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + };
> +
> + eeprom@50 {
> + compatible = "renesas,r1ex24016", "atmel,24c16";
> + reg = <0x50>;
> + pagesize = <16>;
> + };
> +};
> +
> &usb_x1_clk {
> clock-frequency = <48000000>;
> };
> @@ -56,6 +84,11 @@
> };
>
> &pinctrl {
> + /* RIIC ch3 (Port Expander, EEPROM (MAC Addr), Audio Codec) */
> + i2c3_pins: i2c3 {
> + pinmux = <RZA1_PINMUX(1, 6, 1)>, /* RIIC3SCL */
> + <RZA1_PINMUX(1, 7, 1)>; /* RIIC3SDA */
> + };
>
> /* Serial Console */
> scif2_pins: serial2 {
> --
> 2.17.1
>
