[U-Boot] [PATCH 3/7] arm: mvebu: helios4: Enable I2C

Dennis Gilmore dgilmore at redhat.com
Wed Nov 28 13:42:18 UTC 2018


On Wed, 2018-11-28 at 16:59 +0800, Aditya Prayoga wrote:
> Enable Marvell I2C driver and set default bus to external I2C bus.
> Define I2C aliases in device tree so it can be recognized by the
> driver.
> 
> Signed-off-by: Aditya Prayoga <aditya at kobol.io>
> ---
>  arch/arm/dts/armada-388-helios4.dts | 2 ++
>  configs/helios4_defconfig           | 3 +++
>  2 files changed, 5 insertions(+)
> 
> diff --git a/arch/arm/dts/armada-388-helios4.dts
> b/arch/arm/dts/armada-388-helios4.dts
> index a154e0f..711fc22 100644
> --- a/arch/arm/dts/armada-388-helios4.dts
> +++ b/arch/arm/dts/armada-388-helios4.dts
> @@ -24,6 +24,8 @@
>  	aliases {
>  		/* So that mvebu u-boot can update the MAC addresses */
>  		ethernet1 = &eth0;
> +		i2c0 = &i2c0;
> +		i2c1 = &i2c1;

have you sent the dts changes to the linux kernel also?

Dennis
>  	};
>  
>  	chosen {
> diff --git a/configs/helios4_defconfig b/configs/helios4_defconfig
> index e30eb3d..8ac8978 100644
> --- a/configs/helios4_defconfig
> +++ b/configs/helios4_defconfig
> @@ -39,6 +39,9 @@ CONFIG_NET_RANDOM_ETHADDR=y
>  CONFIG_SPL_OF_TRANSLATE=y
>  CONFIG_SCSI_AHCI=y
>  CONFIG_DM_I2C=y
> +CONFIG_SYS_I2C_MVTWSI=y
> +CONFIG_I2C_SET_DEFAULT_BUS_NUM=y
> +CONFIG_I2C_DEFAULT_BUS_NUMBER=0x1
>  CONFIG_MMC_SDHCI=y
>  CONFIG_MMC_SDHCI_SDMA=y
>  CONFIG_MMC_SDHCI_MV=y



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