Commit b7aef28953384f467521d9c981c6a8b1d5dc1ea9
Committed by
Philipp Tomsich
Philipp Tomsich
1 parent
ed7e64e5e8
Exists in
smarc_8mq_lf_v2020.04
and in
19 other branches
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>
Showing 2 changed files with 60 additions and 0 deletions Inline Diff
drivers/ram/rockchip/Makefile
| 1 | # | 1 | # |
| 2 | # Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH | 2 | # Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH |
| 3 | # | 3 | # |
| 4 | # SPDX-License-Identifier: GPL-2.0+ | 4 | # SPDX-License-Identifier: GPL-2.0+ |
| 5 | # | 5 | # |
| 6 | 6 | ||
| 7 | obj-$(CONFIG_ROCKCHIP_RK3368) = dmc-rk3368.o | 7 | obj-$(CONFIG_ROCKCHIP_RK3368) = dmc-rk3368.o |
| 8 | obj-$(CONFIG_ROCKCHIP_RK3128) = sdram_rk3128.o | ||
| 8 | obj-$(CONFIG_ROCKCHIP_RK3188) = sdram_rk3188.o | 9 | obj-$(CONFIG_ROCKCHIP_RK3188) = sdram_rk3188.o |
| 9 | obj-$(CONFIG_ROCKCHIP_RK322X) = sdram_rk322x.o | 10 | obj-$(CONFIG_ROCKCHIP_RK322X) = sdram_rk322x.o |
| 10 | obj-$(CONFIG_ROCKCHIP_RK3288) = sdram_rk3288.o | 11 | obj-$(CONFIG_ROCKCHIP_RK3288) = sdram_rk3288.o |
| 11 | obj-$(CONFIG_ROCKCHIP_RK3328) = sdram_rk3328.o | 12 | obj-$(CONFIG_ROCKCHIP_RK3328) = sdram_rk3328.o |
| 12 | obj-$(CONFIG_ROCKCHIP_RK3399) = sdram_rk3399.o | 13 | obj-$(CONFIG_ROCKCHIP_RK3399) = sdram_rk3399.o |
| 13 | 14 |
drivers/ram/rockchip/sdram_rk3128.c
| File was created | 1 | /* | |
| 2 | * (C) Copyright 2017 Rockchip Electronics Co., Ltd. | ||
| 3 | * | ||
| 4 | * SPDX-License-Identifier: GPL-2.0 | ||
| 5 | */ | ||
| 6 | |||
| 7 | #include <common.h> | ||
| 8 | #include <dm.h> | ||
| 9 | #include <ram.h> | ||
| 10 | #include <syscon.h> | ||
| 11 | #include <asm/arch/clock.h> | ||
| 12 | #include <asm/arch/grf_rk3128.h> | ||
| 13 | #include <asm/arch/sdram_common.h> | ||
| 14 | |||
| 15 | DECLARE_GLOBAL_DATA_PTR; | ||
| 16 | struct dram_info { | ||
| 17 | struct ram_info info; | ||
| 18 | struct rk3128_grf *grf; | ||
| 19 | }; | ||
| 20 | |||
| 21 | static int rk3128_dmc_probe(struct udevice *dev) | ||
| 22 | { | ||
| 23 | struct dram_info *priv = dev_get_priv(dev); | ||
| 24 | |||
| 25 | priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); | ||
| 26 | debug("%s: grf=%p\n", __func__, priv->grf); | ||
| 27 | priv->info.base = CONFIG_SYS_SDRAM_BASE; | ||
| 28 | priv->info.size = rockchip_sdram_size( | ||
| 29 | (phys_addr_t)&priv->grf->os_reg[1]); | ||
| 30 | |||
| 31 | return 0; | ||
| 32 | } | ||
| 33 | |||
| 34 | static int rk3128_dmc_get_info(struct udevice *dev, struct ram_info *info) | ||
| 35 | { | ||
| 36 | struct dram_info *priv = dev_get_priv(dev); | ||
| 37 | |||
| 38 | *info = priv->info; | ||
| 39 | |||
| 40 | return 0; | ||
| 41 | } | ||
| 42 | |||
| 43 | static struct ram_ops rk3128_dmc_ops = { | ||
| 44 | .get_info = rk3128_dmc_get_info, | ||
| 45 | }; | ||
| 46 | |||
| 47 | static const struct udevice_id rk3128_dmc_ids[] = { | ||
| 48 | { .compatible = "rockchip,rk3128-dmc" }, | ||
| 49 | { } | ||
| 50 | }; | ||
| 51 | |||
| 52 | U_BOOT_DRIVER(dmc_rk3128) = { | ||
| 53 | .name = "rockchip_rk3128_dmc", | ||
| 54 | .id = UCLASS_RAM, | ||
| 55 | .of_match = rk3128_dmc_ids, | ||
| 56 | .ops = &rk3128_dmc_ops, | ||
| 57 | .probe = rk3128_dmc_probe, | ||
| 58 | .priv_auto_alloc_size = sizeof(struct dram_info), | ||
| 59 | }; | ||
| 60 |