diff options
author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-29 15:48:02 +0100 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-29 15:48:02 +0100 |
commit | 129961ecaf21c9ee899ad9067d917c1aa172fb7a (patch) | |
tree | 49eafdcf4d6ac490ecdd92c36c285817872eaf34 /arch | |
parent | 392c57a2ec811db37ae45adc513704cf92ba3e69 (diff) | |
parent | cccf59abea4e1c36322e365d6e61ff7de1f3ee07 (diff) |
Merge branch 'wells/lpc32xx-arch_v2' of git://git.lpclinux.com/linux-2.6-lpc into devel-stable
Diffstat (limited to 'arch')
93 files changed, 5152 insertions, 224 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index c1e0cdfd1147..738f404d5e34 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -483,6 +483,19 @@ config ARCH_LOKI help Support for the Marvell Loki (88RC8480) SoC. +config ARCH_LPC32XX + bool "NXP LPC32XX" + select CPU_ARM926T + select ARCH_REQUIRE_GPIOLIB + select HAVE_IDE + select ARM_AMBA + select USB_ARCH_HAS_OHCI + select COMMON_CLKDEV + select GENERIC_TIME + select GENERIC_CLOCKEVENTS + help + Support for the NXP LPC32XX family of processors + config ARCH_MV78XX0 bool "Marvell MV78xx0" select CPU_FEROCEON @@ -847,6 +860,8 @@ source "arch/arm/mach-lh7a40x/Kconfig" source "arch/arm/mach-loki/Kconfig" +source "arch/arm/mach-lpc32xx/Kconfig" + source "arch/arm/mach-msm/Kconfig" source "arch/arm/mach-mv78xx0/Kconfig" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index ddf6da158ad8..71cbb17ff89c 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -146,6 +146,7 @@ machine-$(CONFIG_ARCH_KS8695) := ks8695 machine-$(CONFIG_ARCH_L7200) := l7200 machine-$(CONFIG_ARCH_LH7A40X) := lh7a40x machine-$(CONFIG_ARCH_LOKI) := loki +machine-$(CONFIG_ARCH_LPC32XX) := lpc32xx machine-$(CONFIG_ARCH_MMP) := mmp machine-$(CONFIG_ARCH_MSM) := msm machine-$(CONFIG_ARCH_MV78XX0) := mv78xx0 diff --git a/arch/arm/mach-clps711x/include/mach/debug-macro.S b/arch/arm/mach-clps711x/include/mach/debug-macro.S index fedd8076a689..072cc6b61ba3 100644 --- a/arch/arm/mach-clps711x/include/mach/debug-macro.S +++ b/arch/arm/mach-clps711x/include/mach/debug-macro.S @@ -11,6 +11,7 @@ * */ +#include <mach/hardware.h> #include <asm/hardware/clps7111.h> .macro addruart, rx, tmp diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c index e3bc3f6f6b10..88b3dd89be89 100644 --- a/arch/arm/mach-footbridge/common.c +++ b/arch/arm/mach-footbridge/common.c @@ -232,7 +232,7 @@ EXPORT_SYMBOL(__bus_to_virt); unsigned long __pfn_to_bus(unsigned long pfn) { - return __pfn_to_phys(pfn) + (fb_bus_sdram_offset() - PHYS_OFFSET)); + return __pfn_to_phys(pfn) + (fb_bus_sdram_offset() - PHYS_OFFSET); } EXPORT_SYMBOL(__pfn_to_bus); diff --git a/arch/arm/mach-h720x/include/mach/debug-macro.S b/arch/arm/mach-h720x/include/mach/debug-macro.S index a9ee8f0d48b7..27cafd12f033 100644 --- a/arch/arm/mach-h720x/include/mach/debug-macro.S +++ b/arch/arm/mach-h720x/include/mach/debug-macro.S @@ -11,8 +11,10 @@ * */ - .equ io_virt, IO_BASE - .equ io_phys, IO_START +#include <mach/hardware.h> + + .equ io_virt, IO_VIRT + .equ io_phys, IO_PHYS .macro addruart, rx, tmp mrc p15, 0, \rx, c1, c0 diff --git a/arch/arm/mach-kirkwood/tsx1x-common.h b/arch/arm/mach-kirkwood/tsx1x-common.h index 9a592962a6ea..7fa037361b55 100644 --- a/arch/arm/mach-kirkwood/tsx1x-common.h +++ b/arch/arm/mach-kirkwood/tsx1x-common.h @@ -1,7 +1,7 @@ #ifndef __ARCH_KIRKWOOD_TSX1X_COMMON_H #define __ARCH_KIRKWOOD_TSX1X_COMMON_H -extern void qnap_tsx1x_register_flash(void); +extern void __init qnap_tsx1x_register_flash(void); extern void qnap_tsx1x_power_off(void); #endif diff --git a/arch/arm/mach-lpc32xx/Kconfig b/arch/arm/mach-lpc32xx/Kconfig new file mode 100644 index 000000000000..fde663508696 --- /dev/null +++ b/arch/arm/mach-lpc32xx/Kconfig @@ -0,0 +1,33 @@ +if ARCH_LPC32XX + +menu "Individual UART enable selections" + +config ARCH_LPC32XX_UART3_SELECT + bool "Add support for standard UART3" + help + Adds support for standard UART 3 when the 8250 serial support + is enabled. + +config ARCH_LPC32XX_UART4_SELECT + bool "Add support for standard UART4" + help + Adds support for standard UART 4 when the 8250 serial support + is enabled. + +config ARCH_LPC32XX_UART5_SELECT + bool "Add support for standard UART5" + default y + help + Adds support for standard UART 5 when the 8250 serial support + is enabled. + +config ARCH_LPC32XX_UART6_SELECT + bool "Add support for standard UART6" + help + Adds support for standard UART 6 when the 8250 serial support + is enabled. + +endmenu + +endif + diff --git a/arch/arm/mach-lpc32xx/Makefile b/arch/arm/mach-lpc32xx/Makefile new file mode 100644 index 000000000000..a5fc5d0eeaeb --- /dev/null +++ b/arch/arm/mach-lpc32xx/Makefile @@ -0,0 +1,8 @@ +# +# Makefile for the linux kernel. +# + +obj-y := timer.o irq.o common.o serial.o clock.o +obj-y += gpiolib.o pm.o suspend.o +obj-y += phy3250.o + diff --git a/arch/arm/mach-lpc32xx/Makefile.boot b/arch/arm/mach-lpc32xx/Makefile.boot new file mode 100644 index 000000000000..b796b41ebf8f --- /dev/null +++ b/arch/arm/mach-lpc32xx/Makefile.boot @@ -0,0 +1,4 @@ + zreladdr-y := 0x80008000 +params_phys-y := 0x80000100 +initrd_phys-y := 0x82000000 + diff --git a/arch/arm/mach-lpc32xx/clock.c b/arch/arm/mach-lpc32xx/clock.c new file mode 100644 index 000000000000..32d63796430a --- /dev/null +++ b/arch/arm/mach-lpc32xx/clock.c @@ -0,0 +1,1137 @@ +/* + * arch/arm/mach-lpc32xx/clock.c + * + * Author: Kevin Wells <kevin.wells@nxp.com> + * + * Copyright (C) 2010 NXP Semiconductors + * + * 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. + */ + +/* + * LPC32xx clock management driver overview + * + * The LPC32XX contains a number of high level system clocks that can be + * generated from different sources. These system clocks are used to + * generate the CPU and bus rates and the individual peripheral clocks in + * the system. When Linux is started by the boot loader, the system + * clocks are already running. Stopping a system clock during normal + * Linux operation should never be attempted, as peripherals that require + * those clocks will quit working (ie, DRAM). + * + * The LPC32xx high level clock tree looks as follows. Clocks marked with + * an asterisk are always on and cannot be disabled. Clocks marked with + * an ampersand can only be disabled in CPU suspend mode. Clocks marked + * with a caret are always on if it is the selected clock for the SYSCLK + * source. The clock that isn't used for SYSCLK can be enabled and + * disabled normally. + * 32KHz oscillator* + * / | \ + * RTC* PLL397^ TOUCH + * / + * Main oscillator^ / + * | \ / + * | SYSCLK& + * | \ + * | \ + * USB_PLL HCLK_PLL& + * | | | + * USB host/device PCLK& | + * | | + * Peripherals + * + * The CPU and chip bus rates are derived from the HCLK PLL, which can + * generate various clock rates up to 266MHz and beyond. The internal bus + * rates (PCLK and HCLK) are generated from dividers based on the HCLK + * PLL rate. HCLK can be a ratio of 1:1, 1:2, or 1:4 or HCLK PLL rate, + * while PCLK can be 1:1 to 1:32 of HCLK PLL rate. Most peripherals high + * level clocks are based on either HCLK or PCLK, but have their own + * dividers as part of the IP itself. Because of this, the system clock + * rates should not be changed. + * + * The HCLK PLL is clocked from SYSCLK, which can be derived from the + * main oscillator or PLL397. PLL397 generates a rate that is 397 times + * the 32KHz oscillator rate. The main oscillator runs at the selected + * oscillator/crystal rate on the mosc_in pin of the LPC32xx. This rate + * is normally 13MHz, but depends on the selection of external crystals + * or oscillators. If USB operation is required, the main oscillator must + * be used in the system. + * + * Switching SYSCLK between sources during normal Linux operation is not + * supported. SYSCLK is preset in the bootloader. Because of the + * complexities of clock management during clock frequency changes, + * there are some limitations to the clock driver explained below: + * - The PLL397 and main oscillator can be enabled and disabled by the + * clk_enable() and clk_disable() functions unless SYSCLK is based + * on that clock. This allows the other oscillator that isn't driving + * the HCLK PLL to be used as another system clock that can be routed + * to an external pin. + * - The muxed SYSCLK input and HCLK_PLL rate cannot be changed with + * this driver. + * - HCLK and PCLK rates cannot be changed as part of this driver. + * - Most peripherals have their own dividers are part of the peripheral + * block. Changing SYSCLK, HCLK PLL, HCLK, or PCLK sources or rates + * will also impact the individual peripheral rates. + */ + +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/errno.h> +#include <linux/device.h> +#include <linux/err.h> +#include <linux/clk.h> +#include <linux/amba/bus.h> +#include <linux/amba/clcd.h> + +#include <mach/hardware.h> +#include <asm/clkdev.h> +#include <mach/clkdev.h> +#include <mach/platform.h> +#include "clock.h" +#include "common.h" + +static struct clk clk_armpll; +static struct clk clk_usbpll; +static DEFINE_MUTEX(clkm_lock); + +/* + * Post divider values for PLLs based on selected register value + */ +static const u32 pll_postdivs[4] = {1, 2, 4, 8}; + +static unsigned long local_return_parent_rate(struct clk *clk) +{ + /* + * If a clock has a rate of 0, then it inherits it's parent + * clock rate + */ + while (clk->rate == 0) + clk = clk->parent; + + return clk->rate; +} + +/* 32KHz clock has a fixed rate and is not stoppable */ +static struct clk osc_32KHz = { + .rate = LPC32XX_CLOCK_OSC_FREQ, + .get_rate = local_return_parent_rate, +}; + +static int local_pll397_enable(struct clk *clk, int enable) +{ + u32 reg; + unsigned long timeout = 1 + msecs_to_jiffies(10); + + reg = __raw_readl(LPC32XX_CLKPWR_PLL397_CTRL); + + if (enable == 0) { + reg |= LPC32XX_CLKPWR_SYSCTRL_PLL397_DIS; + __raw_writel(reg, LPC32XX_CLKPWR_PLL397_CTRL); + } else { + /* Enable PLL397 */ + reg &= ~LPC32XX_CLKPWR_SYSCTRL_PLL397_DIS; + __raw_writel(reg, LPC32XX_CLKPWR_PLL397_CTRL); + + /* Wait for PLL397 lock */ + while (((__raw_readl(LPC32XX_CLKPWR_PLL397_CTRL) & + LPC32XX_CLKPWR_SYSCTRL_PLL397_STS) == 0) && + (timeout > jiffies)) + cpu_relax(); + + if ((__raw_readl(LPC32XX_CLKPWR_PLL397_CTRL) & + LPC32XX_CLKPWR_SYSCTRL_PLL397_STS) == 0) + return -ENODEV; + } + + return 0; +} + +static int local_oscmain_enable(struct clk *clk, int enable) +{ + u32 reg; + unsigned long timeout = 1 + msecs_to_jiffies(10); + + reg = __raw_readl(LPC32XX_CLKPWR_MAIN_OSC_CTRL); + + if (enable == 0) { + reg |= LPC32XX_CLKPWR_MOSC_DISABLE; + __raw_writel(reg, LPC32XX_CLKPWR_MAIN_OSC_CTRL); + } else { + /* Enable main oscillator */ + reg &= ~LPC32XX_CLKPWR_MOSC_DISABLE; + __raw_writel(reg, LPC32XX_CLKPWR_MAIN_OSC_CTRL); + + /* Wait for main oscillator to start */ + while (((__raw_readl(LPC32XX_CLKPWR_M |