diff options
| author | Kever Yang <kever.yang@rock-chips.com> | 2017-11-28 16:04:21 +0800 |
|---|---|---|
| committer | Philipp Tomsich <philipp.tomsich@theobroma-systems.com> | 2017-11-30 22:55:27 +0100 |
| commit | b7aef28953384f467521d9c981c6a8b1d5dc1ea9 (patch) | |
| tree | efe721c281eefbe9eec06d62db6dcb177b0fb201 /drivers/ram | |
| parent | ed7e64e5e87c728775c78924499e95e6fee65921 (diff) | |
rockchip: rk3128: add sdram driver
RK3128 support up to 2GB DDR3 sdram, one channel, 32bit data width.
This patch is only used for U-Boot, but not for SPL which will
comes later, maybe after we merge all the common code into a common
file.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Diffstat (limited to 'drivers/ram')
| -rw-r--r-- | drivers/ram/rockchip/Makefile | 1 | ||||
| -rw-r--r-- | drivers/ram/rockchip/sdram_rk3128.c | 59 |
2 files changed, 60 insertions, 0 deletions
diff --git a/drivers/ram/rockchip/Makefile b/drivers/ram/rockchip/Makefile index 45b5fe72471..1a1e5578ca4 100644 --- a/drivers/ram/rockchip/Makefile +++ b/drivers/ram/rockchip/Makefile @@ -5,6 +5,7 @@ # obj-$(CONFIG_ROCKCHIP_RK3368) = dmc-rk3368.o +obj-$(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 diff --git a/drivers/ram/rockchip/sdram_rk3128.c b/drivers/ram/rockchip/sdram_rk3128.c new file mode 100644 index 00000000000..a33127f4b05 --- /dev/null +++ b/drivers/ram/rockchip/sdram_rk3128.c @@ -0,0 +1,59 @@ +/* + * (C) Copyright 2017 Rockchip Electronics Co., Ltd. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <common.h> +#include <dm.h> +#include <ram.h> +#include <syscon.h> +#include <asm/arch/clock.h> +#include <asm/arch/grf_rk3128.h> +#include <asm/arch/sdram_common.h> + +DECLARE_GLOBAL_DATA_PTR; +struct dram_info { + struct ram_info info; + struct rk3128_grf *grf; +}; + +static int rk3128_dmc_probe(struct udevice *dev) +{ + struct dram_info *priv = dev_get_priv(dev); + + priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); + debug("%s: grf=%p\n", __func__, priv->grf); + priv->info.base = CONFIG_SYS_SDRAM_BASE; + priv->info.size = rockchip_sdram_size( + (phys_addr_t)&priv->grf->os_reg[1]); + + return 0; +} + +static int rk3128_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 rk3128_dmc_ops = { + .get_info = rk3128_dmc_get_info, +}; + +static const struct udevice_id rk3128_dmc_ids[] = { + { .compatible = "rockchip,rk3128-dmc" }, + { } +}; + +U_BOOT_DRIVER(dmc_rk3128) = { + .name = "rockchip_rk3128_dmc", + .id = UCLASS_RAM, + .of_match = rk3128_dmc_ids, + .ops = &rk3128_dmc_ops, + .probe = rk3128_dmc_probe, + .priv_auto_alloc_size = sizeof(struct dram_info), +}; |