Add support for reading DRAM size information from PMUGRF os_reg18 reg.
Compared to most Rockchip SoCs the RK3528 use os_reg18 for DRAM info, instead of os_reg2.
Signed-off-by: Jonas Karlman jonas@kwiboo.se --- arch/arm/mach-rockchip/sdram.c | 3 ++- drivers/ram/rockchip/Makefile | 1 + drivers/ram/rockchip/sdram_rk3528.c | 33 +++++++++++++++++++++++++++++ 3 files changed, 36 insertions(+), 1 deletion(-) create mode 100644 drivers/ram/rockchip/sdram_rk3528.c
diff --git a/arch/arm/mach-rockchip/sdram.c b/arch/arm/mach-rockchip/sdram.c index 3193fc0aa1e8..caca6f917305 100644 --- a/arch/arm/mach-rockchip/sdram.c +++ b/arch/arm/mach-rockchip/sdram.c @@ -110,7 +110,8 @@ static int rockchip_dram_init_banksize(void) u8 i, j;
if (!IS_ENABLED(CONFIG_ROCKCHIP_RK3588) && - !IS_ENABLED(CONFIG_ROCKCHIP_RK3568)) + !IS_ENABLED(CONFIG_ROCKCHIP_RK3568) && + !IS_ENABLED(CONFIG_ROCKCHIP_RK3528)) return -ENOTSUPP;
if (!IS_ENABLED(CONFIG_ROCKCHIP_EXTERNAL_TPL)) diff --git a/drivers/ram/rockchip/Makefile b/drivers/ram/rockchip/Makefile index 36dc0500dab5..f222cc99f1e4 100644 --- a/drivers/ram/rockchip/Makefile +++ b/drivers/ram/rockchip/Makefile @@ -13,6 +13,7 @@ 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-$(CONFIG_ROCKCHIP_RK3528) += sdram_rk3528.o obj-$(CONFIG_ROCKCHIP_RK3568) += sdram_rk3568.o obj-$(CONFIG_ROCKCHIP_RK3588) += sdram_rk3588.o obj-$(CONFIG_ROCKCHIP_RV1126) += sdram_rv1126.o sdram_pctl_px30.o diff --git a/drivers/ram/rockchip/sdram_rk3528.c b/drivers/ram/rockchip/sdram_rk3528.c new file mode 100644 index 000000000000..89d325bea667 --- /dev/null +++ b/drivers/ram/rockchip/sdram_rk3528.c @@ -0,0 +1,33 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +// Copyright Contributors to the U-Boot project. + +#include <dm.h> +#include <ram.h> +#include <asm/arch-rockchip/sdram.h> + +#define PMUGRF_BASE 0xff370000 +#define OS_REG18_REG 0x248 + +static int rk3528_dmc_get_info(struct udevice *dev, struct ram_info *info) +{ + info->base = CFG_SYS_SDRAM_BASE; + info->size = rockchip_sdram_size(PMUGRF_BASE + OS_REG18_REG); + + return 0; +} + +static struct ram_ops rk3528_dmc_ops = { + .get_info = rk3528_dmc_get_info, +}; + +static const struct udevice_id rk3528_dmc_ids[] = { + { .compatible = "rockchip,rk3528-dmc" }, + { } +}; + +U_BOOT_DRIVER(rockchip_rk3528_dmc) = { + .name = "rockchip_rk3528_dmc", + .id = UCLASS_RAM, + .of_match = rk3528_dmc_ids, + .ops = &rk3528_dmc_ops, +};