[U-Boot] [PATCH 29/52] rockchip: rk3368: syscon: MSCH/PMUGRF/GRF support for OF_PLATDATA

[Andy Yan]

Hi Philipp:


On 2017年07月19日 04:36, Philipp Tomsich wrote:
> The RK3368 has both a limited SPL size (just 0x7000 bytes) and the
> added challenge of booting in AArch64, which increases the code size
> for SPL (particularily when using the LP64 programming model).  For
> this reason we expect the RK3368 to always use OF_PLATDATA for its
> SPL stage.

     According to your previous patch, maybe you mean TPL here?
> This change adds support for the MSCH, PMUGRF and GRF register regions
> in syscon, which are necessary for initialising the RK3368's DRAM
> controller.
>
> Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
>
>   arch/arm/mach-rockchip/rk3368/syscon_rk3368.c | 35 +++++++++++++++++++++++++++
>   1 file changed, 35 insertions(+)
>
> diff --git a/arch/arm/mach-rockchip/rk3368/syscon_rk3368.c b/arch/arm/mach-rockchip/rk3368/syscon_rk3368.c
> index 03e97eb..90a993e 100644
> --- a/arch/arm/mach-rockchip/rk3368/syscon_rk3368.c
> +++ b/arch/arm/mach-rockchip/rk3368/syscon_rk3368.c
> @@ -1,6 +1,8 @@
>   /*
>    * (C) Copyright 2017 Rockchip Electronics Co., Ltd
>    * Author: Andy Yan <andy.yan at rock-chips.com>
> + * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
> + *
>    * SPDX-License-Identifier:	GPL-2.0+
>    */
>   
> @@ -14,6 +16,8 @@ static const struct udevice_id rk3368_syscon_ids[] = {
>   	  .data = ROCKCHIP_SYSCON_GRF },
>   	{ .compatible = "rockchip,rk3368-pmugrf",
>   	  .data = ROCKCHIP_SYSCON_PMUGRF },
> +	{ .compatible = "rockchip,rk3368-msch",
> +	  .data = ROCKCHIP_SYSCON_MSCH },
>   	{ }
>   };
>   
> @@ -22,3 +26,34 @@ U_BOOT_DRIVER(syscon_rk3368) = {
>   	.id = UCLASS_SYSCON,
>   	.of_match = rk3368_syscon_ids,
>   };
> +
> +#if CONFIG_IS_ENABLED(OF_PLATDATA)
> +static int rk3368_syscon_bind_of_platdata(struct udevice *dev)
> +{
> +	dev->driver_data = dev->driver->of_match->data;
> +	debug("syscon: %s %d\n", dev->name, (uint)dev->driver_data);
> +
> +	return 0;
> +}
> +
> +U_BOOT_DRIVER(rockchip_rk3368_grf) = {
> +	.name = "rockchip_rk3368_grf",
> +	.id = UCLASS_SYSCON,
> +	.of_match = rk3368_syscon_ids,
> +	.bind = rk3368_syscon_bind_of_platdata,
> +};
> +
> +U_BOOT_DRIVER(rockchip_rk3368_pmugrf) = {
> +	.name = "rockchip_rk3368_pmugrf",
> +	.id = UCLASS_SYSCON,
> +	.of_match = rk3368_syscon_ids + 1,
> +	.bind = rk3368_syscon_bind_of_platdata,
> +};
> +
> +U_BOOT_DRIVER(rockchip_rk3368_msch) = {
> +	.name = "rockchip_rk3368_msch",
> +	.id = UCLASS_SYSCON,
> +	.of_match = rk3368_syscon_ids + 2,
> +	.bind = rk3368_syscon_bind_of_platdata,
> +};
> +#endif