[PATCH v1 3/5] rockchip: rk3568: Add sdram driver

[Kever Yang]

On 2021/6/2 下午3:58, Joseph Chen wrote:
> Add the driver for rk3568 u-boot to get sdram capacity.
>
> Signed-off-by: Joseph Chen <chenjh at rock-chips.com>

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

Thanks,
- Kever
> ---
>
>   drivers/ram/rockchip/Makefile       |  1 +
>   drivers/ram/rockchip/sdram_rk3568.c | 56 +++++++++++++++++++++++++++++
>   2 files changed, 57 insertions(+)
>   create mode 100644 drivers/ram/rockchip/sdram_rk3568.c
>
> diff --git a/drivers/ram/rockchip/Makefile b/drivers/ram/rockchip/Makefile
> index c3ec89ada4..ca1c289b88 100644
> --- a/drivers/ram/rockchip/Makefile
> +++ b/drivers/ram/rockchip/Makefile
> @@ -12,4 +12,5 @@ obj-$(CONFIG_ROCKCHIP_RK3288) = sdram_rk3288.o
>   obj-$(CONFIG_ROCKCHIP_RK3308) = sdram_rk3308.o
>   obj-$(CONFIG_ROCKCHIP_RK3328) = sdram_rk3328.o sdram_pctl_px30.o sdram_phy_px30.o
>   obj-$(CONFIG_ROCKCHIP_RK3399) += sdram_rk3399.o
> +obj-$(CONFIG_ROCKCHIP_RK3568) += sdram_rk3568.o
>   obj-$(CONFIG_ROCKCHIP_SDRAM_COMMON) += sdram_common.o
> diff --git a/drivers/ram/rockchip/sdram_rk3568.c b/drivers/ram/rockchip/sdram_rk3568.c
> new file mode 100644
> index 0000000000..0ac4b54eef
> --- /dev/null
> +++ b/drivers/ram/rockchip/sdram_rk3568.c
> @@ -0,0 +1,56 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * (C) Copyright 2021 Rockchip Electronics Co., Ltd.
> + */
> +
> +#include <common.h>
> +#include <dm.h>
> +#include <ram.h>
> +#include <syscon.h>
> +#include <asm/arch-rockchip/clock.h>
> +#include <asm/arch-rockchip/grf_rk3568.h>
> +#include <asm/arch-rockchip/sdram.h>
> +
> +struct dram_info {
> +	struct ram_info info;
> +	struct rk3568_pmugrf *pmugrf;
> +};
> +
> +static int rk3568_dmc_probe(struct udevice *dev)
> +{
> +	struct dram_info *priv = dev_get_priv(dev);
> +
> +	priv->pmugrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF);
> +	priv->info.base = CONFIG_SYS_SDRAM_BASE;
> +	priv->info.size =
> +		rockchip_sdram_size((phys_addr_t)&priv->pmugrf->pmu_os_reg2);
> +
> +	return 0;
> +}
> +
> +static int rk3568_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 rk3568_dmc_ops = {
> +	.get_info = rk3568_dmc_get_info,
> +};
> +
> +static const struct udevice_id rk3568_dmc_ids[] = {
> +	{ .compatible = "rockchip,rk3568-dmc" },
> +	{ }
> +};
> +
> +U_BOOT_DRIVER(dmc_rk3568) = {
> +	.name = "rockchip_rk3568_dmc",
> +	.id = UCLASS_RAM,
> +	.of_match = rk3568_dmc_ids,
> +	.ops = &rk3568_dmc_ops,
> +	.probe = rk3568_dmc_probe,
> +	.priv_auto = sizeof(struct dram_info),
> +};