From cc89369fb0055ec34a56becd8ecc8d0b9d77c801 Mon Sep 17 00:00:00 2001 From: Kever Yang Date: Fri, 23 Jun 2017 16:11:08 +0800 Subject: [PATCH] rockchip: rk3368: add sdram driver for U-Boot Add sdram driver in U-Boot for get the correct sdram size from sys_reg, so that U-Boot can co-work with Rockchip loader or SPL to get different dram capability and then tell the kernel. Signed-off-by: Kever Yang Reviewed-by: Philipp Tomsich --- .../include/asm/arch-rockchip/grf_rk3368.h | 4 +- arch/arm/mach-rockchip/rk3368/Makefile | 1 + arch/arm/mach-rockchip/rk3368/sdram_rk3368.c | 60 +++++++++++++++++++ 3 files changed, 64 insertions(+), 1 deletion(-) create mode 100644 arch/arm/mach-rockchip/rk3368/sdram_rk3368.c diff --git a/arch/arm/include/asm/arch-rockchip/grf_rk3368.h b/arch/arm/include/asm/arch-rockchip/grf_rk3368.h index 3233dc306e..93c4e7d4e1 100644 --- a/arch/arm/include/asm/arch-rockchip/grf_rk3368.h +++ b/arch/arm/include/asm/arch-rockchip/grf_rk3368.h @@ -92,8 +92,10 @@ struct rk3368_pmu_grf { u32 gpio0d_drv; u32 gpio0l_sr; u32 gpio0h_sr; + u32 reserved[(0x200 - 0x34) / 4 - 1]; + u32 os_reg[4]; }; -check_member(rk3368_pmu_grf, gpio0h_sr, 0x34); +check_member(rk3368_pmu_grf, os_reg[3], 0x20c); /*GRF_GPIO0C_IOMUX*/ enum { diff --git a/arch/arm/mach-rockchip/rk3368/Makefile b/arch/arm/mach-rockchip/rk3368/Makefile index 46798c2e93..0390716410 100644 --- a/arch/arm/mach-rockchip/rk3368/Makefile +++ b/arch/arm/mach-rockchip/rk3368/Makefile @@ -5,4 +5,5 @@ # obj-y += clk_rk3368.o obj-y += rk3368.o +obj-y += sdram_rk3368.o obj-y += syscon_rk3368.o diff --git a/arch/arm/mach-rockchip/rk3368/sdram_rk3368.c b/arch/arm/mach-rockchip/rk3368/sdram_rk3368.c new file mode 100644 index 0000000000..d0d090087b --- /dev/null +++ b/arch/arm/mach-rockchip/rk3368/sdram_rk3368.c @@ -0,0 +1,60 @@ +/* + * (C) Copyright 2016 Rockchip Electronics Co., Ltd. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include +#include +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; +struct dram_info { + struct ram_info info; + struct rk3368_pmu_grf *pmugrf; +}; + +static int rk3368_dmc_probe(struct udevice *dev) +{ + struct dram_info *priv = dev_get_priv(dev); + + priv->pmugrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF); + debug("%s: grf=%p\n", __func__, priv->pmugrf); + priv->info.base = CONFIG_SYS_SDRAM_BASE; + priv->info.size = rockchip_sdram_size( + (phys_addr_t)&priv->pmugrf->os_reg[2]); + + return 0; +} + +static int rk3368_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 rk3368_dmc_ops = { + .get_info = rk3368_dmc_get_info, +}; + + +static const struct udevice_id rk3368_dmc_ids[] = { + { .compatible = "rockchip,rk3368-dmc" }, + { } +}; + +U_BOOT_DRIVER(dmc_rk3368) = { + .name = "rockchip_rk3368_dmc", + .id = UCLASS_RAM, + .of_match = rk3368_dmc_ids, + .ops = &rk3368_dmc_ops, + .probe = rk3368_dmc_probe, + .priv_auto_alloc_size = sizeof(struct dram_info), +}; -- 2.25.1