From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.phycore.de ([217.6.246.34] helo=root.phytec.de) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bPsKg-0006Vf-6P for barebox@lists.infradead.org; Wed, 20 Jul 2016 14:18:49 +0000 Received: from idefix.phytec.de (idefix.phytec.de [172.16.0.10]) by root.phytec.de (Postfix) with ESMTP id 6E4E1A00324 for ; Wed, 20 Jul 2016 16:19:34 +0200 (CEST) From: Wadim Egorov Date: Wed, 20 Jul 2016 16:17:39 +0200 Message-Id: <1469024265-20098-2-git-send-email-w.egorov@phytec.de> In-Reply-To: <1469024265-20098-1-git-send-email-w.egorov@phytec.de> References: <1469024265-20098-1-git-send-email-w.egorov@phytec.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 2/8] ARM: rockchip: Add timer driver To: barebox@lists.infradead.org This driver comes from the u-boot (v2016.01). Signed-off-by: Wadim Egorov --- arch/arm/mach-rockchip/Kconfig | 5 +++ arch/arm/mach-rockchip/Makefile | 1 + arch/arm/mach-rockchip/include/mach/timer.h | 19 ++++++++++++ arch/arm/mach-rockchip/rk_timer.c | 48 +++++++++++++++++++++++++++++ 4 files changed, 73 insertions(+) create mode 100644 arch/arm/mach-rockchip/include/mach/timer.h create mode 100644 arch/arm/mach-rockchip/rk_timer.c diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig index e027fae..fa0e8fc 100644 --- a/arch/arm/mach-rockchip/Kconfig +++ b/arch/arm/mach-rockchip/Kconfig @@ -7,6 +7,11 @@ config ARCH_TEXT_BASE default 0x68000000 if ARCH_RK3188 default 0x0 if ARCH_RK3288 +config TIMER_BASE + hex + default 0x2000E020 if ARCH_RK3188 + default 0xff810020 if ARCH_RK3288 + choice prompt "Select Rockchip SoC" diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile index 4ca7f17..1211208 100644 --- a/arch/arm/mach-rockchip/Makefile +++ b/arch/arm/mach-rockchip/Makefile @@ -1,2 +1,3 @@ obj-$(CONFIG_ARCH_RK3188) += rk3188.o obj-$(CONFIG_ARCH_RK3288) += rk3288.o +obj-y += rk_timer.o diff --git a/arch/arm/mach-rockchip/include/mach/timer.h b/arch/arm/mach-rockchip/include/mach/timer.h new file mode 100644 index 0000000..e6ed0e4 --- /dev/null +++ b/arch/arm/mach-rockchip/include/mach/timer.h @@ -0,0 +1,19 @@ +/* + * (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; +}; + +#endif diff --git a/arch/arm/mach-rockchip/rk_timer.c b/arch/arm/mach-rockchip/rk_timer.c new file mode 100644 index 0000000..2bb6a0b --- /dev/null +++ b/arch/arm/mach-rockchip/rk_timer.c @@ -0,0 +1,48 @@ +/* + * (C) Copyright 2015 Rockchip Electronics Co., Ltd + * + * (C) Copyright 2016 PHYTEC Messtechnik GmbH + * Author: Wadim Egorov + + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +struct rk_timer * const timer_ptr = (void *)CONFIG_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 struct clocksource rkcs = { + .read = rockchip_get_ticks, + .mask = CLOCKSOURCE_MASK(32), + .shift = 10, +}; + +static int rockchip_timer_init(void) +{ + rkcs.mult = clocksource_hz2mult(OSC_HZ, rkcs.shift); + + writel(0xffffffff, &timer_ptr->timer_load_count0); + writel(0xffffffff, &timer_ptr->timer_load_count1); + writel(1, &timer_ptr->timer_ctrl_reg); + + return init_clock(&rkcs); +} + +core_initcall(rockchip_timer_init); -- 1.9.1 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox