[PATCH 2/4] ARM: mvebu: helios4 dts changes to enable SPI

Baruch Siach
2020-12-07T05:36:31Z

Hi Dennis,

On Mon, Dec 07 2020, dgilmore at redhat.com wrote:
> From: Dennis Gilmore <dennis@ausil.us>
>
> mirror seettings for the clearfog on the helios4 to get SPI working.
>
> Signed-off-by: Dennis Gilmore <dennis@ausil.us>
> ---
> arch/arm/dts/armada-388-helios4-u-boot.dtsi | 22 ++++++----
> arch/arm/dts/armada-388-helios4.dts | 46 ++++++++++++++++++++-
> 2 files changed, 58 insertions(+), 10 deletions(-)
>
> diff --git a/arch/arm/dts/armada-388-helios4-u-boot.dtsi b/arch/arm/dts/armada-388-helios4-u-boot.dtsi
> index 0753889854..82513a1ce7 100644
> --- a/arch/arm/dts/armada-388-helios4-u-boot.dtsi
> +++ b/arch/arm/dts/armada-388-helios4-u-boot.dtsi
> @@ -1,13 +1,5 @@
> // SPDX-License-Identifier: GPL-2.0+
>
> -/ {
> - aliases {
> - i2c0 = &i2c0;
> - i2c1 = &i2c1;
> - spi1 = &spi1;
> - };
> -};
> -
> &eth0 {
> phy-reset-gpios = <&gpio0 19 GPIO_ACTIVE_LOW>;
> };
> @@ -37,5 +29,17 @@
> };
>
> &sdhci {
> - u-boot,dm-spl;
> + u-boot,dm-spl;
> +};
> +
> +&i2c0 {
> + u-boot,dm-spl;
> +
> + eeprom at 52 {
> + u-boot,dm-spl;
> + };
> +
> + eeprom at 53 {
> + u-boot,dm-spl;
> + };
> };
> diff --git a/arch/arm/dts/armada-388-helios4.dts b/arch/arm/dts/armada-388-helios4.dts
> index fb49df2a3b..e948b94090 100644
> --- a/arch/arm/dts/armada-388-helios4.dts
> +++ b/arch/arm/dts/armada-388-helios4.dts
> @@ -22,10 +22,14 @@
> };
>
> aliases {
> - /* So that mvebu u-boot can update the MAC addresses */
> + /* So that mvebu u-boot can update the MAC address */
> ethernet1 = &eth0;
> + spi1 = &spi1;
> + i2c0 = &i2c0;
> + i2c1 = &i2c1;
> };
>
> +
> chosen {
> stdout-path = "serial0:115200n8";
> };
> @@ -306,3 +310,43 @@
> };
> };
> };
> +
> +&pinctrl {
> + helios4_spi1_cs_pins: spi1-cs-pins {
> + marvell,pins = "mpp55";
> + marvell,function = "spi1";
> + };
> + mikro_pins: mikro-pins {
> + /* int: mpp22 rst: mpp29 */
> + marvell,pins = "mpp22", "mpp29";
> + marvell,function = "gpio";
> + };
> + mikro_spi_pins: mikro-spi-pins {
> + marvell,pins = "mpp43";
> + marvell,function = "spi1";
> + };
> + mikro_uart_pins: mikro-uart-pins {
> + marvell,pins = "mpp24", "mpp25";
> + marvell,function = "ua1";
> + };
> + rear_button_pins: rear-button-pins {
> + marvell,pins = "mpp34";
> + marvell,function = "gpio";
> + };

There is no MikroBUS header or rear button on the Helios4 carrier as far
as I can see.

> +};
> +
> +&w25q32 {
> + status = "okay";
> +};
> +
> +&spi1 {
> + /*
> + * Add SPI CS pins for helios4:
> + * CS0: W25Q32
> + * CS1:
> + * CS2: mikrobus

Ditto.

> + */
> + pinctrl-0 = <&spi1_pins &mikro_spi_pins>;
> + pinctrl-names = "default";
> + status = "okay";
> +};

baruch

--
~. .~ Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
- baruch at tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -