[U-Boot] [PATCH v2 5/9] rockchip: rk3308: Add sdram driver

[Kever Yang]

On 2019/10/30 下午4:16, Andy Yan wrote:
> A dm based dram driver for rk3308 u-boot
> to get capacity.
>
> Signed-off-by: Andy Yan <andy.yan at rock-chips.com>

Reviewed-by: Kever Yang<kever.yang at rock-chips.com>

Thanks,
- Kever
> ---
>
> Changes in v2: None
>
>   drivers/ram/rockchip/Makefile       |  1 +
>   drivers/ram/rockchip/sdram_rk3308.c | 55 +++++++++++++++++++++++++++++
>   2 files changed, 56 insertions(+)
>   create mode 100644 drivers/ram/rockchip/sdram_rk3308.c
>
> diff --git a/drivers/ram/rockchip/Makefile b/drivers/ram/rockchip/Makefile
> index feb1f82d00..1adca32dcb 100644
> --- a/drivers/ram/rockchip/Makefile
> +++ b/drivers/ram/rockchip/Makefile
> @@ -9,5 +9,6 @@ obj-$(CONFIG_ROCKCHIP_RK3128) = sdram_rk3128.o
>   obj-$(CONFIG_ROCKCHIP_RK3188) = sdram_rk3188.o
>   obj-$(CONFIG_ROCKCHIP_RK322X) = sdram_rk322x.o
>   obj-$(CONFIG_ROCKCHIP_RK3288) = sdram_rk3288.o
> +obj-$(CONFIG_ROCKCHIP_RK3308) = sdram_rk3308.o
>   obj-$(CONFIG_ROCKCHIP_RK3328) = sdram_rk3328.o
>   obj-$(CONFIG_RAM_RK3399) += sdram_rk3399.o
> diff --git a/drivers/ram/rockchip/sdram_rk3308.c b/drivers/ram/rockchip/sdram_rk3308.c
> new file mode 100644
> index 0000000000..43d44cce62
> --- /dev/null
> +++ b/drivers/ram/rockchip/sdram_rk3308.c
> @@ -0,0 +1,55 @@
> +// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
> +/*
> + * (C) Copyright 2019 Rockchip Electronics Co., Ltd.
> + */
> +
> +#include <common.h>
> +#include <dm.h>
> +#include <ram.h>
> +#include <syscon.h>
> +#include <asm/arch/grf_rk3308.h>
> +#include <asm/arch-rockchip/clock.h>
> +#include <asm/arch-rockchip/sdram_common.h>
> +
> +struct dram_info {
> +	struct ram_info info;
> +	struct rk3308_grf *grf;
> +};
> +
> +static int rk3308_dmc_probe(struct udevice *dev)
> +{
> +	struct dram_info *priv = dev_get_priv(dev);
> +
> +	priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
> +	priv->info.base = CONFIG_SYS_SDRAM_BASE;
> +	priv->info.size = rockchip_sdram_size((phys_addr_t)&priv->grf->os_reg2);
> +
> +	return 0;
> +}
> +
> +static int rk3308_dmc_get_info(struct udevice *dev, struct ram_info *info)
> +{
> +	struct dram_info *priv = dev_get_priv(dev);
> +
> +	*info = priv->info;
> +
> +	return 0;
> +}
> +
> +static struct ram_ops rk3308_dmc_ops = {
> +	.get_info = rk3308_dmc_get_info,
> +};
> +
> +static const struct udevice_id rk3308_dmc_ids[] = {
> +	{ .compatible = "rockchip,rk3308-dmc" },
> +	{ }
> +};
> +
> +U_BOOT_DRIVER(dmc_rk3308) = {
> +	.name = "rockchip_rk3308_dmc",
> +	.id = UCLASS_RAM,
> +	.of_match = rk3308_dmc_ids,
> +	.ops = &rk3308_dmc_ops,
> +	.probe = rk3308_dmc_probe,
> +	.priv_auto_alloc_size = sizeof(struct dram_info),
> +};