diff options
Diffstat (limited to 'arch/arm/mach-rockchip/rockchip.c')
| -rw-r--r-- | arch/arm/mach-rockchip/rockchip.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/arch/arm/mach-rockchip/rockchip.c b/arch/arm/mach-rockchip/rockchip.c new file mode 100644 index 000000000..beea4564e --- /dev/null +++ b/arch/arm/mach-rockchip/rockchip.c @@ -0,0 +1,75 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Device Tree support for Rockchip SoCs + * + * Copyright (c) 2013 MundoReader S.L. + * Author: Heiko Stuebner <heiko@sntech.de> + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/of_clk.h> +#include <linux/of_platform.h> +#include <linux/irqchip.h> +#include <linux/clocksource.h> +#include <linux/mfd/syscon.h> +#include <linux/regmap.h> +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/hardware/cache-l2x0.h> +#include "core.h" +#include "pm.h" + +#define RK3288_TIMER6_7_PHYS 0xff810000 + +static void __init rockchip_timer_init(void) +{ + if (of_machine_is_compatible("rockchip,rk3288")) { + void __iomem *reg_base; + + /* + * Most/all uboot versions for rk3288 don't enable timer7 + * which is needed for the architected timer to work. + * So make sure it is running during early boot. + */ + reg_base = ioremap(RK3288_TIMER6_7_PHYS, SZ_16K); + if (reg_base) { + writel(0, reg_base + 0x30); + writel(0xffffffff, reg_base + 0x20); + writel(0xffffffff, reg_base + 0x24); + writel(1, reg_base + 0x30); + dsb(); + iounmap(reg_base); + } else { + pr_err("rockchip: could not map timer7 registers\n"); + } + } + + of_clk_init(NULL); + timer_probe(); +} + +static void __init rockchip_dt_init(void) +{ + rockchip_suspend_init(); +} + +static const char * const rockchip_board_dt_compat[] = { + "rockchip,rk2928", + "rockchip,rk3066a", + "rockchip,rk3066b", + "rockchip,rk3188", + "rockchip,rk3228", + "rockchip,rk3288", + "rockchip,rv1108", + NULL, +}; + +DT_MACHINE_START(ROCKCHIP_DT, "Rockchip (Device Tree)") + .l2c_aux_val = 0, + .l2c_aux_mask = ~0, + .init_time = rockchip_timer_init, + .dt_compat = rockchip_board_dt_compat, + .init_machine = rockchip_dt_init, +MACHINE_END |