From cc2244b8fa85b4a8af228617ed7566785dfb1728 Mon Sep 17 00:00:00 2001 From: huang lin Date: Tue, 17 Nov 2015 14:20:09 +0800 Subject: [PATCH] rockchip: add timer driver some rockchip soc will not include lib/timer.c in SPL stage, so implement timer driver for some soc can use us delay function in SPL. Signed-off-by: Lin Huang Acked-by: Simon Glass --- arch/arm/include/asm/arch-rockchip/timer.h | 22 ++++++++++ arch/arm/mach-rockchip/Makefile | 1 + arch/arm/mach-rockchip/board-spl.c | 21 +--------- arch/arm/mach-rockchip/rk_timer.c | 48 ++++++++++++++++++++++ include/configs/rk3288_common.h | 3 +- 5 files changed, 75 insertions(+), 20 deletions(-) create mode 100644 arch/arm/include/asm/arch-rockchip/timer.h create mode 100644 arch/arm/mach-rockchip/rk_timer.c diff --git a/arch/arm/include/asm/arch-rockchip/timer.h b/arch/arm/include/asm/arch-rockchip/timer.h new file mode 100644 index 0000000000..1d044bbda5 --- /dev/null +++ b/arch/arm/include/asm/arch-rockchip/timer.h @@ -0,0 +1,22 @@ +/* + * (C) Copyright 2015 Rockchip Electronics Co., Ltd + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ASM_ARCH_TIMER_H +#define __ASM_ARCH_TIMER_H + +struct rk_timer { + unsigned int timer_load_count0; + unsigned int timer_load_count1; + unsigned int timer_curr_value0; + unsigned int timer_curr_value1; + unsigned int timer_ctrl_reg; + unsigned int timer_int_status; +}; + +void rockchip_timer_init(void); +void rockchip_udelay(unsigned int usec); + +#endif diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile index 5a4e383a91..abe03a88a6 100644 --- a/arch/arm/mach-rockchip/Makefile +++ b/arch/arm/mach-rockchip/Makefile @@ -10,4 +10,5 @@ else obj-y += board.o endif obj-y += common.o +obj-y += rk_timer.o obj-$(CONFIG_ROCKCHIP_RK3288) += rk3288/ diff --git a/arch/arm/mach-rockchip/board-spl.c b/arch/arm/mach-rockchip/board-spl.c index 28c3949b75..0426adf6b7 100644 --- a/arch/arm/mach-rockchip/board-spl.c +++ b/arch/arm/mach-rockchip/board-spl.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -110,24 +111,6 @@ static void configure_l2ctlr(void) write_l2ctlr(l2ctlr); } -struct rk3288_timer { - u32 timer_load_count0; - u32 timer_load_count1; - u32 timer_curr_value0; - u32 timer_curr_value1; - u32 timer_ctrl_reg; - u32 timer_int_status; -}; - -void init_timer(void) -{ - struct rk3288_timer * const timer7_ptr = (void *)TIMER7_BASE; - - writel(0xffffffff, &timer7_ptr->timer_load_count0); - writel(0xffffffff, &timer7_ptr->timer_load_count1); - writel(1, &timer7_ptr->timer_ctrl_reg); -} - static int configure_emmc(struct udevice *pinctrl) { struct gpio_desc desc; @@ -197,7 +180,7 @@ void board_init_f(ulong dummy) hang(); } - init_timer(); + rockchip_timer_init(); configure_l2ctlr(); ret = uclass_get_device(UCLASS_CLK, 0, &dev); diff --git a/arch/arm/mach-rockchip/rk_timer.c b/arch/arm/mach-rockchip/rk_timer.c new file mode 100644 index 0000000000..ae5123d73b --- /dev/null +++ b/arch/arm/mach-rockchip/rk_timer.c @@ -0,0 +1,48 @@ +/* + * (C) Copyright 2015 Rockchip Electronics Co., Ltd + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +struct rk_timer * const timer_ptr = (void *)CONFIG_SYS_TIMER_BASE; + +static uint64_t rockchip_get_ticks(void) +{ + uint64_t timebase_h, timebase_l; + + timebase_l = readl(&timer_ptr->timer_curr_value0); + timebase_h = readl(&timer_ptr->timer_curr_value1); + + return timebase_h << 32 | timebase_l; +} + +static uint64_t usec_to_tick(unsigned int usec) +{ + uint64_t tick = usec; + tick *= CONFIG_SYS_TIMER_RATE / (1000 * 1000); + return tick; +} + +void rockchip_udelay(unsigned int usec) +{ + uint64_t tmp; + + /* get timestamp */ + tmp = rockchip_get_ticks() + usec_to_tick(usec); + + /* loop till event */ + while (rockchip_get_ticks() < tmp+1) + ; +} + +void rockchip_timer_init(void) +{ + writel(0xffffffff, &timer_ptr->timer_load_count0); + writel(0xffffffff, &timer_ptr->timer_load_count1); + writel(1, &timer_ptr->timer_ctrl_reg); +} diff --git a/include/configs/rk3288_common.h b/include/configs/rk3288_common.h index a513ac4f04..af62227793 100644 --- a/include/configs/rk3288_common.h +++ b/include/configs/rk3288_common.h @@ -22,7 +22,8 @@ #define CONFIG_DISPLAY_BOARDINFO #define CONFIG_SYS_TIMER_RATE (24 * 1000 * 1000) -#define CONFIG_SYS_TIMER_COUNTER (TIMER7_BASE + 8) +#define CONFIG_SYS_TIMER_BASE 0xff810020 /* TIMER7 */ +#define CONFIG_SYS_TIMER_COUNTER (CONFIG_SYS_TIMER_BASE + 8) #define CONFIG_SPL_FRAMEWORK #define CONFIG_SPL_LIBCOMMON_SUPPORT -- 2.30.2