From 2d46775287e3e421e5c1369ddc04626ccf52c23d Mon Sep 17 00:00:00 2001 From: Joseph Chen Date: Wed, 2 Jun 2021 15:58:24 +0800 Subject: [PATCH] rockchip: rk3568: Add sdram driver Add the driver for rk3568 u-boot to get sdram capacity. Signed-off-by: Joseph Chen Reviewed-by: Kever Yang --- 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 +#include +#include +#include +#include +#include +#include + +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), +}; -- 2.39.5