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authorWolfgang Denk <wd@denx.de>2012-05-20 21:31:26 +0200
committerWolfgang Denk <wd@denx.de>2012-05-20 21:31:26 +0200
commitee3a55fdf00b54391e406217e53674449e70d78b (patch)
tree0c7edb3ba668e5a215c42e8b1429cc3f394351b2 /arch/arm/cpu/arm926ejs/lpc32xx/timer.c
parent6bc337fb13003a9a949dfb2713e308fb97faae8a (diff)
parent2ca4a209a5b961ad1be8782c68dabe326d77dfaf (diff)
Merge branch 'master' of git://git.denx.de/u-boot-arm
* 'master' of git://git.denx.de/u-boot-arm: (167 commits) OMAP4/5: Change omap4_sdp, omap4_panda, omap5_evm maintainer ARM: omap3: Add CONFIG_SPL_BOARD_INIT for CONFIG_SPL_MMC_SUPPORT ARM: omap3: Set SPL stack size to 8KB, image to 54KB. arm, omap3: fix warm reset serial output on OMAP36xx/AM/DM37xx OMAP4: Set fdt_high for OMAP4 devices to enable booting with Device Tree omap4: do not enable auxiliary cores omap4: do not enable fs-usb module omap4: panda: disable uart2 pads during boot igep00x0: change mpurate from 500 to auto igep00x0: enable the use of a plain text file tegra2: trivially enable 13 mhz crystal frequency tegra: Enable keyboard for Seaboard tegra: Switch on console mux and use environment for console tegra: Add tegra keyboard driver tegra: fdt: Add keyboard definitions for Seaboard tegra: fdt: Add keyboard controller definition tegra: Add keyboard support to funcmux input: Add support for keyboard matrix decoding from an fdt input: Add generic keyboard input handler input: Add linux/input.h for key code support fdt: Add fdtdec functions to read byte array tegra: Enable LP0 on Seaboard tegra: fdt: Add EMC data for Tegra2 Seaboard tegra: i2c: Add function to find DVC bus fdt: tegra: Add EMC node to device tree tegra: Add EMC settings for Seaboard tegra: Turn off power detect in board init tegra: Set up warmboot code on Nvidia boards tegra: Setup PMC scratch info from ap20 setup tegra: Add warmboot implementation tegra: Set up PMU for Nvidia boards tegra: Add PMU to manage power supplies tegra: Add EMC support for optimal memory timings tegra: Add header file for APB_MISC register tegra: Add tegra_get_chip_type() to detect SKU tegra: Add flow, gp_padctl, fuse, sdram headers tegra: Add crypto library for warmboot code tegra: Add functions to access low-level Osc/PLL details tegra: Move ap20.h header into arch location Add AES crypto library i2c: Add TPS6586X driver Add abs() macro to return absolute value fdt: Add function to return next compatible subnode fdt: Add function to locate an array in the device tree i.MX28: Avoid redefining serial_put[cs]() i.MX28: Check if WP detection is implemented at all i.MX28: Add battery boot components to SPL i.MX28: Reorder battery status functions in SPL i.MX28: Add LRADC init to i.MX28 SPL i.MX28: Add LRADC register definitions i.MX28: Shut down the LCD controller before reset i.MX28: Add LCDIF register definitions i.MX28: Implement boot pads sampling and reporting i.MX28: Improve passing of data from SPL to U-Boot M28EVK: Add SD update command M28EVK: Implement support for new board V2.0 FEC: Abstract out register setup MX5: PAD_CTL_DRV_VOT_LOW and PAD_CTL_DRV_VOT_HIGH exchanged i.MX28: Add delay after CPU bypass is cleared spi: mxs: Allow other chip selects to work spi: mxs: Introduce spi_cs_is_valid() mx53loco: Remove unneeded gpio_set_value() mx53loco: Add CONFIG_REVISION_TAG mx53loco: Turn on VUSB regulator mx53loco: Add mc34708 support and set mx53 frequency at 1GHz pmic: dialog: Avoid name conflicts imx: Add u-boot.imx as target for ARM9 i.MX SOCs i.MX2: Include asm/types.h in arch-mx25/imx-regs.h imx: usb: There is no such register i.MX25: usb: Set PORTSCx register imx: nand: Support flash based BBT i.MX25: This architecture has a GPIO4 too i.MX25: esdhc: Add mxc_get_clock infrastructure i.MX6: mx6q_sabrelite: add SATA bindings i.MX6: add enable_sata_clock() i.MX6: Add ANATOP regulator init mx28evk: add NAND support USB: ehci-mx6: Fix broken IO access M28: Scan only first 512 MB of DRAM to avoid memory wraparound Revert "i.MX28: Enable additional DRAM address bits" M28: Enable FDT support mx53loco: Add support for 1GHz operation for DA9053-based boards mx53loco: Allow to print CPU information at a later stage mx5: Add clock config interface imx-common: Factor out get_ahb_clk() i.MX6Q: mx6qsabrelite: Add keypress support to alter boot flow mx31pdk: Allow booting a zImage kernel mx6qarm2: Allow booting a zImage kernel mx6qsabrelite: Allow booting a zImage kernel mx28evk: Allow booting a zImage kernel m28evk: Allow to booting a dt kernel mx28evk: Allow to booting a dt kernel mx6qsabrelite: No need to set the direction for GPIO3_23 again pmic: Add support for the Dialog DA9053 PMIC MX53: mx53loco: Add SATA support MX53: Add support to ESG ima3 board SATA: add driver for MX5 / MX6 SOCs MX53: add function to set SATA clock to internal SATA: check for return value from sata functions MX5: Add definitions for SATA controller NET: fec_mxc.c: Add a way to disable auto negotiation Define UART4 and UART5 base addresses EXYNOS: Change bits per pixel value proper for u-boot. EXYNOS: support TRATS board display function LCD: support S6E8AX0 amoled driver based on EXYNOS MIPI DSI EXYNOS: support EXYNOS MIPI DSI interface driver. EXYNOS: support EXYNOS framebuffer and FIMD display drivers. LCD: add data structure for EXYNOS display driver EXYNOS: add LCD and MIPI DSI clock interface. EXYNOS: definitions of system resgister and power management registers. SMDK5250: fix compiler warning misc:pmic:samsung Convert TRATS target to use MAX8997 instead of MAX8998 misc:pmic:max8997 MAX8997 support for PMIC driver TRATS: modify the trats's configuration ARM: Exynos4: ADC: Universal_C210: Enable LDO4 power line for ADC measurement EXYNOS: Rename exynos5_tzpc structure to exynos_tzpc arm: ea20: Change macro from BOARD_LATE_INIT to CONFIG_BOARD_LATE_INIT arm: cam_enc_4xx: Change macro from BOARD_LATE_INIT to CONFIG_BOARD_LATE_INIT cm-t35: add I2C multi-bus support include/configs: Remove CONFIG_SYS_64BIT_STRTOUL include/configs: Remove CONFIG_SYS_64BIT_VSPRINTF omap3: Introduce weak misc_init_r omap730p2: Remove empty misc_init_r omap5912osk: Remove empty misc_init_r omap4+: Remove CONFIG_ARCH_CPU_INIT omap4: Remove CONFIG_SYS_MMC_SET_DEV OMAP3: pandora: drop console kernel argument OMAP3: pandora: revise GPIO configuration ...
Diffstat (limited to 'arch/arm/cpu/arm926ejs/lpc32xx/timer.c')
-rw-r--r--arch/arm/cpu/arm926ejs/lpc32xx/timer.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm926ejs/lpc32xx/timer.c b/arch/arm/cpu/arm926ejs/lpc32xx/timer.c
new file mode 100644
index 0000000000..1ce2358afd
--- /dev/null
+++ b/arch/arm/cpu/arm926ejs/lpc32xx/timer.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2011 Vladimir Zapolskiy <vz@mleia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include <common.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/timer.h>
+#include <asm/io.h>
+
+static struct timer_regs *timer0 = (struct timer_regs *)TIMER0_BASE;
+static struct timer_regs *timer1 = (struct timer_regs *)TIMER1_BASE;
+static struct clk_pm_regs *clk = (struct clk_pm_regs *)CLK_PM_BASE;
+
+static void lpc32xx_timer_clock(u32 bit, int enable)
+{
+ if (enable)
+ setbits_le32(&clk->timclk_ctrl1, bit);
+ else
+ clrbits_le32(&clk->timclk_ctrl1, bit);
+}
+
+static void lpc32xx_timer_reset(struct timer_regs *timer, u32 freq)
+{
+ writel(TIMER_TCR_COUNTER_RESET, &timer->tcr);
+ writel(TIMER_TCR_COUNTER_DISABLE, &timer->tcr);
+ writel(0, &timer->tc);
+ writel(0, &timer->pr);
+
+ /* Count mode is every rising PCLK edge */
+ writel(TIMER_CTCR_MODE_TIMER, &timer->ctcr);
+
+ /* Set prescale counter value */
+ writel((get_periph_clk_rate() / freq) - 1, &timer->pr);
+}
+
+static void lpc32xx_timer_count(struct timer_regs *timer, int enable)
+{
+ if (enable)
+ writel(TIMER_TCR_COUNTER_ENABLE, &timer->tcr);
+ else
+ writel(TIMER_TCR_COUNTER_DISABLE, &timer->tcr);
+}
+
+int timer_init(void)
+{
+ lpc32xx_timer_clock(CLK_TIMCLK_TIMER0, 1);
+ lpc32xx_timer_reset(timer0, CONFIG_SYS_HZ);
+ lpc32xx_timer_count(timer0, 1);
+
+ return 0;
+}
+
+ulong get_timer(ulong base)
+{
+ return readl(&timer0->tc) - base;
+}
+
+void __udelay(unsigned long usec)
+{
+ lpc32xx_timer_clock(CLK_TIMCLK_TIMER1, 1);
+ lpc32xx_timer_reset(timer1, CONFIG_SYS_HZ * 1000);
+ lpc32xx_timer_count(timer1, 1);
+
+ while (readl(&timer1->tc) < usec)
+ /* NOP */;
+
+ lpc32xx_timer_count(timer1, 0);
+ lpc32xx_timer_clock(CLK_TIMCLK_TIMER1, 0);
+}
+
+unsigned long long get_ticks(void)
+{
+ return get_timer(0);
+}
+
+ulong get_tbclk(void)
+{
+ return CONFIG_SYS_HZ;
+}