[U-Boot] [PATCH 45/52] rockchip: dts: rk3368: add DMC node in rk3368.dtsi

[Andy Yan]

Hi Philipp:


On 2017年07月19日 04:36, Philipp Tomsich wrote:
> For full SPL support, including DRAM initialisation, we need a few
> nodes from the DTS: this commit adds the DMC (DRAM controller) node,
> the service_msch (memory scheduler) node and marks GRF, PMUGRF and CRU
> as 'u-boot,dm-pre-reloc'.  In addition to this, we also include the
> dt-binding for the DMC to allow DTS files including this DTSI to refer
> to the symbolic constants for the DDR3 bin and for the
> memory-schedule.
>
> Note that the DMC contains both the memory regions for the
> (Designware) protocol controller as well as the DDR PHY.
>
> Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
>
>   arch/arm/dts/rk3368.dtsi | 26 ++++++++++++++++++++------
>   1 file changed, 20 insertions(+), 6 deletions(-)
>
> diff --git a/arch/arm/dts/rk3368.dtsi b/arch/arm/dts/rk3368.dtsi
> index 9daf765..8dd6549 100644
> --- a/arch/arm/dts/rk3368.dtsi
> +++ b/arch/arm/dts/rk3368.dtsi
> @@ -46,6 +46,7 @@
>   #include <dt-bindings/interrupt-controller/arm-gic.h>
>   #include <dt-bindings/pinctrl/rockchip.h>
>   #include <dt-bindings/thermal/thermal.h>
> +#include <dt-bindings/memory/rk3368-dmc.h>
>   
>   / {
>   	compatible = "rockchip,rk3368";
> @@ -227,6 +228,23 @@
>   		#clock-cells = <0>;
>   	};
>   
> +	dmc: dmc at ff610000 {
> +		u-boot,dm-pre-reloc;
> +		compatible = "rockchip,rk3368-dmc", "syscon";
> +		rockchip,cru = <&cru>;
> +		rockchip,grf = <&grf>;
> +		rockchip,msch = <&service_msch>;
> +		reg = <0 0xff610000 0 0x400
> +		       0 0xff620000 0 0x400>;
> +	};
> +
> +	service_msch: syscon at ffac0000 {
> +		u-boot,dm-pre-reloc;
> +		compatible = "rockchip,rk3368-msch", "syscon";
> +		reg = <0x0 0xffac0000 0x0 0x2000>;
> +		status = "okay";
> +	};
> +
>   	sdmmc: dwmmc at ff0c0000 {
>   		compatible = "rockchip,rk3368-dw-mshc", "rockchip,rk3288-dw-mshc";
>   		reg = <0x0 0xff0c0000 0x0 0x4000>;
> @@ -546,12 +564,6 @@
>   		status = "disabled";
>   	};
>   
> -	dmc: dmc at ff610000 {
> -		u-boot,dm-pre-reloc;
> -		compatible = "rockchip,rk3368-dmc", "syscon";
> -		reg = <0x0 0xff610000 0x0 0x1000>;
> -	};
> -
>   	i2c0: i2c at ff650000 {
>   		compatible = "rockchip,rk3368-i2c", "rockchip,rk3288-i2c";
>   		reg = <0x0 0xff650000 0x0 0x1000>;
> @@ -653,6 +665,7 @@
>   	};
>   
>   	cru: clock-controller at ff760000 {
> +		u-boot,dm-pre-reloc;

     As U-BOOT has introduced xxx-u-boot.dtsi for the U-BOOT-spceific  
dt information. I think it's better to put this u-boot needed things in 
rk3368-u-boot.dtsi. It will make things easier when we need to sync the 
dts with upstream kernel.
>   		compatible = "rockchip,rk3368-cru";
>   		reg = <0x0 0xff760000 0x0 0x1000>;
>   		rockchip,grf = <&grf>;
> @@ -661,6 +674,7 @@
>   	};
>   
>   	grf: syscon at ff770000 {
> +		u-boot,dm-pre-reloc;
>   		compatible = "rockchip,rk3368-grf", "syscon";
>   		reg = <0x0 0xff770000 0x0 0x1000>;
>   	};