diff options
Diffstat (limited to 'arch/arm/mach-kirkwood/common.c')
| -rw-r--r-- | arch/arm/mach-kirkwood/common.c | 470 |
1 files changed, 333 insertions, 137 deletions
diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c index 77d4852e19f..255f33a3903 100644 --- a/arch/arm/mach-kirkwood/common.c +++ b/arch/arm/mach-kirkwood/common.c @@ -15,40 +15,41 @@ #include <linux/ata_platform.h> #include <linux/mtd/nand.h> #include <linux/dma-mapping.h> +#include <linux/clk-provider.h> +#include <linux/spinlock.h> +#include <linux/mv643xx_i2c.h> +#include <linux/timex.h> +#include <linux/kexec.h> +#include <linux/reboot.h> #include <net/dsa.h> #include <asm/page.h> -#include <asm/timex.h> -#include <asm/kexec.h> #include <asm/mach/map.h> #include <asm/mach/time.h> +#include <asm/hardware/cache-feroceon-l2.h> #include <mach/kirkwood.h> #include <mach/bridge-regs.h> -#include <plat/audio.h> -#include <plat/cache-feroceon-l2.h> -#include <plat/mvsdio.h> -#include <plat/orion_nand.h> -#include <plat/ehci-orion.h> +#include <linux/platform_data/asoc-kirkwood.h> +#include <linux/platform_data/mmc-mvsdio.h> +#include <linux/platform_data/mtd-orion_nand.h> +#include <linux/platform_data/usb-ehci-orion.h> #include <plat/common.h> #include <plat/time.h> -#include <plat/addr-map.h> +#include <linux/platform_data/dma-mv_xor.h> #include "common.h" +#include "pm.h" + +/* These can go away once Kirkwood uses the mvebu-mbus DT binding */ +#define KIRKWOOD_MBUS_NAND_TARGET 0x01 +#define KIRKWOOD_MBUS_NAND_ATTR 0x2f +#define KIRKWOOD_MBUS_SRAM_TARGET 0x03 +#define KIRKWOOD_MBUS_SRAM_ATTR 0x01 /***************************************************************************** * I/O Address Mapping ****************************************************************************/ static struct map_desc kirkwood_io_desc[] __initdata = { { - .virtual = KIRKWOOD_PCIE_IO_VIRT_BASE, - .pfn = __phys_to_pfn(KIRKWOOD_PCIE_IO_PHYS_BASE), - .length = KIRKWOOD_PCIE_IO_SIZE, - .type = MT_DEVICE, - }, { - .virtual = KIRKWOOD_PCIE1_IO_VIRT_BASE, - .pfn = __phys_to_pfn(KIRKWOOD_PCIE1_IO_PHYS_BASE), - .length = KIRKWOOD_PCIE1_IO_SIZE, - .type = MT_DEVICE, - }, { - .virtual = KIRKWOOD_REGS_VIRT_BASE, + .virtual = (unsigned long) KIRKWOOD_REGS_VIRT_BASE, .pfn = __phys_to_pfn(KIRKWOOD_REGS_PHYS_BASE), .length = KIRKWOOD_REGS_SIZE, .type = MT_DEVICE, @@ -60,20 +61,231 @@ void __init kirkwood_map_io(void) iotable_init(kirkwood_io_desc, ARRAY_SIZE(kirkwood_io_desc)); } -/* - * Default clock control bits. Any bit _not_ set in this variable - * will be cleared from the hardware after platform devices have been - * registered. Some reserved bits must be set to 1. - */ -unsigned int kirkwood_clk_ctrl = CGC_DUNIT | CGC_RESERVED; +/***************************************************************************** + * CLK tree + ****************************************************************************/ + +static void enable_sata0(void) +{ + /* Enable PLL and IVREF */ + writel(readl(SATA0_PHY_MODE_2) | 0xf, SATA0_PHY_MODE_2); + /* Enable PHY */ + writel(readl(SATA0_IF_CTRL) & ~0x200, SATA0_IF_CTRL); +} + +static void disable_sata0(void) +{ + /* Disable PLL and IVREF */ + writel(readl(SATA0_PHY_MODE_2) & ~0xf, SATA0_PHY_MODE_2); + /* Disable PHY */ + writel(readl(SATA0_IF_CTRL) | 0x200, SATA0_IF_CTRL); +} + +static void enable_sata1(void) +{ + /* Enable PLL and IVREF */ + writel(readl(SATA1_PHY_MODE_2) | 0xf, SATA1_PHY_MODE_2); + /* Enable PHY */ + writel(readl(SATA1_IF_CTRL) & ~0x200, SATA1_IF_CTRL); +} +static void disable_sata1(void) +{ + /* Disable PLL and IVREF */ + writel(readl(SATA1_PHY_MODE_2) & ~0xf, SATA1_PHY_MODE_2); + /* Disable PHY */ + writel(readl(SATA1_IF_CTRL) | 0x200, SATA1_IF_CTRL); +} + +static void disable_pcie0(void) +{ + writel(readl(PCIE_LINK_CTRL) | 0x10, PCIE_LINK_CTRL); + while (1) + if (readl(PCIE_STATUS) & 0x1) + break; + writel(readl(PCIE_LINK_CTRL) & ~0x10, PCIE_LINK_CTRL); +} + +static void disable_pcie1(void) +{ + u32 dev, rev; + + kirkwood_pcie_id(&dev, &rev); + + if (dev == MV88F6282_DEV_ID) { + writel(readl(PCIE1_LINK_CTRL) | 0x10, PCIE1_LINK_CTRL); + while (1) + if (readl(PCIE1_STATUS) & 0x1) + break; + writel(readl(PCIE1_LINK_CTRL) & ~0x10, PCIE1_LINK_CTRL); + } +} + +/* An extended version of the gated clk. This calls fn_en()/fn_dis + * before enabling/disabling the clock. We use this to turn on/off + * PHYs etc. */ +struct clk_gate_fn { + struct clk_gate gate; + void (*fn_en)(void); + void (*fn_dis)(void); +}; + +#define to_clk_gate_fn(_gate) container_of(_gate, struct clk_gate_fn, gate) +#define to_clk_gate(_hw) container_of(_hw, struct clk_gate, hw) + +static int clk_gate_fn_enable(struct clk_hw *hw) +{ + struct clk_gate *gate = to_clk_gate(hw); + struct clk_gate_fn *gate_fn = to_clk_gate_fn(gate); + int ret; + + ret = clk_gate_ops.enable(hw); + if (!ret && gate_fn->fn_en) + gate_fn->fn_en(); + + return ret; +} + +static void clk_gate_fn_disable(struct clk_hw *hw) +{ + struct clk_gate *gate = to_clk_gate(hw); + struct clk_gate_fn *gate_fn = to_clk_gate_fn(gate); + + if (gate_fn->fn_dis) + gate_fn->fn_dis(); + + clk_gate_ops.disable(hw); +} + +static struct clk_ops clk_gate_fn_ops; + +static struct clk __init *clk_register_gate_fn(struct device *dev, + const char *name, + const char *parent_name, unsigned long flags, + void __iomem *reg, u8 bit_idx, + u8 clk_gate_flags, spinlock_t *lock, + void (*fn_en)(void), void (*fn_dis)(void)) +{ + struct clk_gate_fn *gate_fn; + struct clk *clk; + struct clk_init_data init; + + gate_fn = kzalloc(sizeof(struct clk_gate_fn), GFP_KERNEL); + if (!gate_fn) { + pr_err("%s: could not allocate gated clk\n", __func__); + return ERR_PTR(-ENOMEM); + } + + init.name = name; + init.ops = &clk_gate_fn_ops; + init.flags = flags; + init.parent_names = (parent_name ? &parent_name : NULL); + init.num_parents = (parent_name ? 1 : 0); + + /* struct clk_gate assignments */ + gate_fn->gate.reg = reg; + gate_fn->gate.bit_idx = bit_idx; + gate_fn->gate.flags = clk_gate_flags; + gate_fn->gate.lock = lock; + gate_fn->gate.hw.init = &init; + gate_fn->fn_en = fn_en; + gate_fn->fn_dis = fn_dis; + + /* ops is the gate ops, but with our enable/disable functions */ + if (clk_gate_fn_ops.enable != clk_gate_fn_enable || + clk_gate_fn_ops.disable != clk_gate_fn_disable) { + clk_gate_fn_ops = clk_gate_ops; + clk_gate_fn_ops.enable = clk_gate_fn_enable; + clk_gate_fn_ops.disable = clk_gate_fn_disable; + } + + clk = clk_register(dev, &gate_fn->gate.hw); + + if (IS_ERR(clk)) + kfree(gate_fn); + + return clk; +} + +static DEFINE_SPINLOCK(gating_lock); +static struct clk *tclk; + +static struct clk __init *kirkwood_register_gate(const char *name, u8 bit_idx) +{ + return clk_register_gate(NULL, name, "tclk", 0, CLOCK_GATING_CTRL, + bit_idx, 0, &gating_lock); +} + +static struct clk __init *kirkwood_register_gate_fn(const char *name, + u8 bit_idx, + void (*fn_en)(void), + void (*fn_dis)(void)) +{ + return clk_register_gate_fn(NULL, name, "tclk", 0, CLOCK_GATING_CTRL, + bit_idx, 0, &gating_lock, fn_en, fn_dis); +} + +static struct clk *ge0, *ge1; + +void __init kirkwood_clk_init(void) +{ + struct clk *runit, *sata0, *sata1, *usb0, *sdio; + struct clk *crypto, *xor0, *xor1, *pex0, *pex1, *audio; + + tclk = clk_register_fixed_rate(NULL, "tclk", NULL, + CLK_IS_ROOT, kirkwood_tclk); + + runit = kirkwood_register_gate("runit", CGC_BIT_RUNIT); + ge0 = kirkwood_register_gate("ge0", CGC_BIT_GE0); + ge1 = kirkwood_register_gate("ge1", CGC_BIT_GE1); + sata0 = kirkwood_register_gate_fn("sata0", CGC_BIT_SATA0, + enable_sata0, disable_sata0); + sata1 = kirkwood_register_gate_fn("sata1", CGC_BIT_SATA1, + enable_sata1, disable_sata1); + usb0 = kirkwood_register_gate("usb0", CGC_BIT_USB0); + sdio = kirkwood_register_gate("sdio", CGC_BIT_SDIO); + crypto = kirkwood_register_gate("crypto", CGC_BIT_CRYPTO); + xor0 = kirkwood_register_gate("xor0", CGC_BIT_XOR0); + xor1 = kirkwood_register_gate("xor1", CGC_BIT_XOR1); + pex0 = kirkwood_register_gate_fn("pex0", CGC_BIT_PEX0, + NULL, disable_pcie0); + pex1 = kirkwood_register_gate_fn("pex1", CGC_BIT_PEX1, + NULL, disable_pcie1); + audio = kirkwood_register_gate("audio", CGC_BIT_AUDIO); + kirkwood_register_gate("tdm", CGC_BIT_TDM); + kirkwood_register_gate("tsu", CGC_BIT_TSU); + + /* clkdev entries, mapping clks to devices */ + orion_clkdev_add(NULL, "orion_spi.0", runit); + orion_clkdev_add(NULL, "orion_spi.1", runit); + orion_clkdev_add(NULL, MV643XX_ETH_NAME ".0", ge0); + orion_clkdev_add(NULL, MV643XX_ETH_NAME ".1", ge1); + orion_clkdev_add(NULL, "orion_wdt", tclk); + orion_clkdev_add("0", "sata_mv.0", sata0); + orion_clkdev_add("1", "sata_mv.0", sata1); + orion_clkdev_add(NULL, "orion-ehci.0", usb0); + orion_clkdev_add(NULL, "orion_nand", runit); + orion_clkdev_add(NULL, "mvsdio", sdio); + orion_clkdev_add(NULL, "mv_crypto", crypto); + orion_clkdev_add(NULL, MV_XOR_NAME ".0", xor0); + orion_clkdev_add(NULL, MV_XOR_NAME ".1", xor1); + orion_clkdev_add("0", "pcie", pex0); + orion_clkdev_add("1", "pcie", pex1); + orion_clkdev_add(NULL, "mvebu-audio", audio); + orion_clkdev_add(NULL, MV64XXX_I2C_CTLR_NAME ".0", runit); + orion_clkdev_add(NULL, MV64XXX_I2C_CTLR_NAME ".1", runit); + + /* Marvell says runit is used by SPI, UART, NAND, TWSI, ..., + * so should never be gated. + */ + clk_prepare_enable(runit); +} /***************************************************************************** * EHCI0 ****************************************************************************/ void __init kirkwood_ehci_init(void) { - kirkwood_clk_ctrl |= CGC_USB0; orion_ehci_init(USB_PHYS_BASE, IRQ_KIRKWOOD_USB, EHCI_PHY_NA); } @@ -83,11 +295,12 @@ void __init kirkwood_ehci_init(void) ****************************************************************************/ void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data) { - kirkwood_clk_ctrl |= CGC_GE0; - orion_ge00_init(eth_data, GE00_PHYS_BASE, IRQ_KIRKWOOD_GE00_SUM, - IRQ_KIRKWOOD_GE00_ERR, kirkwood_tclk); + IRQ_KIRKWOOD_GE00_ERR, 1600); + /* The interface forgets the MAC address assigned by u-boot if + the clock is turned off, so claim the clk now. */ + clk_prepare_enable(ge0); } @@ -96,12 +309,10 @@ void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data) ****************************************************************************/ void __init kirkwood_ge01_init(struct mv643xx_eth_platform_data *eth_data) { - - kirkwood_clk_ctrl |= CGC_GE1; - orion_ge01_init(eth_data, GE01_PHYS_BASE, IRQ_KIRKWOOD_GE01_SUM, - IRQ_KIRKWOOD_GE01_ERR, kirkwood_tclk); + IRQ_KIRKWOOD_GE01_ERR, 1600); + clk_prepare_enable(ge1); } @@ -143,7 +354,6 @@ static struct platform_device kirkwood_nand_flash = { void __init kirkwood_nand_init(struct mtd_partition *parts, int nr_parts, int chip_delay) { - kirkwood_clk_ctrl |= CGC_RUNIT; kirkwood_nand_data.parts = parts; kirkwood_nand_data.nr_parts = nr_parts; kirkwood_nand_data.chip_delay = chip_delay; @@ -153,7 +363,6 @@ void __init kirkwood_nand_init(struct mtd_partition *parts, int nr_parts, void __init kirkwood_nand_init_rnb(struct mtd_partition *parts, int nr_parts, int (*dev_ready)(struct mtd_info *)) { - kirkwood_clk_ctrl |= CGC_RUNIT; kirkwood_nand_data.parts = parts; kirkwood_nand_data.nr_parts = nr_parts; kirkwood_nand_data.dev_ready = dev_ready; @@ -174,10 +383,6 @@ static void __init kirkwood_rtc_init(void) ****************************************************************************/ void __init kirkwood_sata_init(struct mv_sata_platform_data *sata_data) { - kirkwood_clk_ctrl |= CGC_SATA0; - if (sata_data->n_ports > 1) - kirkwood_clk_ctrl |= CGC_SATA1; - orion_sata_init(sata_data, SATA_PHYS_BASE, IRQ_KIRKWOOD_SATA); } @@ -220,7 +425,6 @@ void __init kirkwood_sdio_init(struct mvsdio_platform_data *mvsdio_data) mvsdio_data->clock = 100000000; else mvsdio_data->clock = 200000000; - kirkwood_clk_ctrl |= CGC_SDIO; kirkwood_sdio.dev.platform_data = mvsdio_data; platform_device_register(&kirkwood_sdio); } @@ -229,10 +433,9 @@ void __init kirkwood_sdio_init(struct mvsdio_platform_data *mvsdio_data) /***************************************************************************** * SPI ****************************************************************************/ -void __init kirkwood_spi_init() +void __init kirkwood_spi_init(void) { - kirkwood_clk_ctrl |= CGC_RUNIT; - orion_spi_init(SPI_PHYS_BASE, kirkwood_tclk); + orion_spi_init(SPI_PHYS_BASE); } @@ -252,7 +455,7 @@ void __init kirkwood_i2c_init(void) void __init kirkwood_uart0_init(void) { orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE, - IRQ_KIRKWOOD_UART_0, kirkwood_tclk); + IRQ_KIRKWOOD_UART_0, tclk); } @@ -262,7 +465,7 @@ void __init kirkwood_uart0_init(void) void __init kirkwood_uart1_init(void) { orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE, - IRQ_KIRKWOOD_UART_1, kirkwood_tclk); + IRQ_KIRKWOOD_UART_1, tclk); } /***************************************************************************** @@ -270,7 +473,6 @@ void __init kirkwood_uart1_init(void) ****************************************************************************/ void __init kirkwood_crypto_init(void) { - kirkwood_clk_ctrl |= CGC_CRYPTO; orion_crypto_init(CRYPTO_PHYS_BASE, KIRKWOOD_SRAM_PHYS_BASE, KIRKWOOD_SRAM_SIZE, IRQ_KIRKWOOD_CRYPTO); } @@ -279,10 +481,8 @@ void __init kirkwood_crypto_init(void) /***************************************************************************** * XOR0 ****************************************************************************/ -static void __init kirkwood_xor0_init(void) +void __init kirkwood_xor0_init(void) { - kirkwood_clk_ctrl |= CGC_XOR0; - orion_xor0_init(XOR0_PHYS_BASE, XOR0_HIGH_PHYS_BASE, IRQ_KIRKWOOD_XOR_00, IRQ_KIRKWOOD_XOR_01); } @@ -291,10 +491,8 @@ static void __init kirkwood_xor0_init(void) /***************************************************************************** * XOR1 ****************************************************************************/ -static void __init kirkwood_xor1_init(void) +void __init kirkwood_xor1_init(void) { - kirkwood_clk_ctrl |= CGC_XOR1; - orion_xor1_init(XOR1_PHYS_BASE, XOR1_HIGH_PHYS_BASE, IRQ_KIRKWOOD_XOR_10, IRQ_KIRKWOOD_XOR_11); } @@ -303,11 +501,33 @@ static void __init kirkwood_xor1_init(void) /***************************************************************************** * Watchdog ****************************************************************************/ -static void __init kirkwood_wdt_init(void) +void __init kirkwood_wdt_init(void) { - orion_wdt_init(kirkwood_tclk); + orion_wdt_init(); } +/***************************************************************************** + * CPU idle + ****************************************************************************/ +static struct resource kirkwood_cpuidle_resource[] = { + { + .flags = IORESOURCE_MEM, + .start = DDR_OPERATION_BASE, + .end = DDR_OPERATION_BASE + 3, + }, +}; + +static struct platform_device kirkwood_cpuidle = { + .name = "kirkwood_cpuidle", + .id = -1, + .resource = kirkwood_cpuidle_resource, + .num_resources = 1, +}; + +void __init kirkwood_cpuidle_init(void) +{ + platform_device_register(&kirkwood_cpuidle); +} /***************************************************************************** * Time handling @@ -332,7 +552,7 @@ static int __init kirkwood_find_tclk(void) return 166666667; } -static void __init kirkwood_timer_init(void) +void __init kirkwood_timer_init(void) { kirkwood_tclk = kirkwood_find_tclk(); @@ -340,14 +560,10 @@ static void __init kirkwood_timer_init(void) IRQ_KIRKWOOD_BRIDGE, kirkwood_tclk); } -struct sys_timer kirkwood_timer = { - .init = kirkwood_timer_init, -}; - /***************************************************************************** * Audio ****************************************************************************/ -static struct resource kirkwood_i2s_resources[] = { +static struct resource kirkwood_audio_resources[] = { [0] = { .start = AUDIO_PHYS_BASE, .end = AUDIO_PHYS_BASE + SZ_16K - 1, @@ -360,30 +576,46 @@ static struct resource kirkwood_i2s_resources[] = { }, }; -static struct kirkwood_asoc_platform_data kirkwood_i2s_data = { +static struct kirkwood_asoc_platform_data kirkwood_audio_data = { .burst = 128, }; -static struct platform_device kirkwood_i2s_device = { - .name = "kirkwood-i2s", +static struct platform_device kirkwood_audio_device = { + .name = "mvebu-audio", .id = -1, - .num_resources = ARRAY_SIZE(kirkwood_i2s_resources), - .resource = kirkwood_i2s_resources, + .num_resources = ARRAY_SIZE(kirkwood_audio_resources), + .resource = kirkwood_audio_resources, .dev = { - .platform_data = &kirkwood_i2s_data, + .platform_data = &kirkwood_audio_data, + }, +}; + +void __init kirkwood_audio_init(void) +{ + platform_device_register(&kirkwood_audio_device); +} + +/***************************************************************************** + * CPU Frequency + ****************************************************************************/ +static struct resource kirkwood_cpufreq_resources[] = { + [0] = { + .start = CPU_CONTROL_PHYS, + .end = CPU_CONTROL_PHYS + 3, + .flags = IORESOURCE_MEM, }, }; -static struct platform_device kirkwood_pcm_device = { - .name = "kirkwood-pcm-audio", +static struct platform_device kirkwood_cpufreq_device = { + .name = "kirkwood-cpufreq", .id = -1, + .num_resources = ARRAY_SIZE(kirkwood_cpufreq_resources), + .resource = kirkwood_cpufreq_resources, }; -void __init kirkwood_audio_init(void) +void __init kirkwood_cpufreq_init(void) { - kirkwood_clk_ctrl |= CGC_AUDIO; - platform_device_register(&kirkwood_i2s_device); - platform_device_register(&kirkwood_pcm_device); + platform_device_register(&kirkwood_cpufreq_device); } /***************************************************************************** @@ -392,7 +624,7 @@ void __init kirkwood_audio_init(void) /* * Identify device ID and revision. */ -static char * __init kirkwood_id(void) +char * __init kirkwood_id(void) { u32 dev, rev; @@ -435,8 +667,21 @@ static char * __init kirkwood_id(void) } } -static void __init kirkwood_l2_init(void) +void __init kirkwood_setup_wins(void) +{ + mvebu_mbus_add_window_by_id(KIRKWOOD_MBUS_NAND_TARGET, + KIRKWOOD_MBUS_NAND_ATTR, + KIRKWOOD_NAND_MEM_PHYS_BASE, + KIRKWOOD_NAND_MEM_SIZE); + mvebu_mbus_add_window_by_id(KIRKWOOD_MBUS_SRAM_TARGET, + KIRKWOOD_MBUS_SRAM_ATTR, + KIRKWOOD_SRAM_PHYS_BASE, + KIRKWOOD_SRAM_SIZE); +} + +void __init kirkwood_l2_init(void) { +#ifdef CONFIG_CACHE_FEROCEON_L2 #ifdef CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH writel(readl(L2_CONFIG_REG) | L2_WRITETHROUGH, L2_CONFIG_REG); feroceon_l2_init(1); @@ -444,13 +689,12 @@ static void __init kirkwood_l2_init(void) writel(readl(L2_CONFIG_REG) & ~L2_WRITETHROUGH, L2_CONFIG_REG); feroceon_l2_init(0); #endif +#endif } void __init kirkwood_init(void) { - printk(KERN_INFO "Kirkwood: %s, TCLK=%d.\n", - kirkwood_id(), kirkwood_tclk); - kirkwood_i2s_data.tclk = kirkwood_tclk; + pr_info("Kirkwood: %s, TCLK=%d.\n", kirkwood_id(), kirkwood_tclk); /* * Disable propagation of mbus errors to the CPU local bus, @@ -460,11 +704,16 @@ void __init kirkwood_init(void) */ writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG); - kirkwood_setup_cpu_mbus(); + BUG_ON(mvebu_mbus_init("marvell,kirkwood-mbus", + BRIDGE_WINS_BASE, BRIDGE_WINS_SZ, + DDR_WINDOW_CPU_BASE, DDR_WINDOW_CPU_SZ)); + + kirkwood_setup_wins(); -#ifdef CONFIG_CACHE_FEROCEON_L2 kirkwood_l2_init(); -#endif + + /* Setup root of clk tree */ + kirkwood_clk_init(); /* internal devices that every board has */ kirkwood_rtc_init(); @@ -473,67 +722,14 @@ void __init kirkwood_init(void) kirkwood_xor1_init(); kirkwood_crypto_init(); -#ifdef CONFIG_KEXEC + kirkwood_pm_init(); + kirkwood_cpuidle_init(); +#ifdef CONFIG_KEXEC kexec_reinit = kirkwood_enable_pcie; #endif } -static int __init kirkwood_clock_gate(void) -{ - unsigned int curr = readl(CLOCK_GATING_CTRL); - u32 dev, rev; - - kirkwood_pcie_id(&dev, &rev); - printk(KERN_DEBUG "Gating clock of unused units\n"); - printk(KERN_DEBUG "before: 0x%08x\n", curr); - - /* Make sure those units are accessible */ - writel(curr | CGC_SATA0 | CGC_SATA1 | CGC_PEX0 | CGC_PEX1, CLOCK_GATING_CTRL); - - /* For SATA: first shutdown the phy */ - if (!(kirkwood_clk_ctrl & CGC_SATA0)) { - /* Disable PLL and IVREF */ - writel(readl(SATA0_PHY_MODE_2) & ~0xf, SATA0_PHY_MODE_2); - /* Disable PHY */ - writel(readl(SATA0_IF_CTRL) | 0x200, SATA0_IF_CTRL); - } - if (!(kirkwood_clk_ctrl & CGC_SATA1)) { - /* Disable PLL and IVREF */ - writel(readl(SATA1_PHY_MODE_2) & ~0xf, SATA1_PHY_MODE_2); - /* Disable PHY */ - writel(readl(SATA1_IF_CTRL) | 0x200, SATA1_IF_CTRL); - } - - /* For PCIe: first shutdown the phy */ - if (!(kirkwood_clk_ctrl & CGC_PEX0)) { - writel(readl(PCIE_LINK_CTRL) | 0x10, PCIE_LINK_CTRL); - while (1) - if (readl(PCIE_STATUS) & 0x1) - break; - writel(readl(PCIE_LINK_CTRL) & ~0x10, PCIE_LINK_CTRL); - } - - /* For PCIe 1: first shutdown the phy */ - if (dev == MV88F6282_DEV_ID) { - if (!(kirkwood_clk_ctrl & CGC_PEX1)) { - writel(readl(PCIE1_LINK_CTRL) | 0x10, PCIE1_LINK_CTRL); - while (1) - if (readl(PCIE1_STATUS) & 0x1) - break; - writel(readl(PCIE1_LINK_CTRL) & ~0x10, PCIE1_LINK_CTRL); - } - } else /* keep this bit set for devices that don't have PCIe1 */ - kirkwood_clk_ctrl |= CGC_PEX1; - - /* Now gate clock the required units */ - writel(kirkwood_clk_ctrl, CLOCK_GATING_CTRL); - printk(KERN_DEBUG " after: 0x%08x\n", readl(CLOCK_GATING_CTRL)); - - return 0; -} -late_initcall(kirkwood_clock_gate); - -void kirkwood_restart(char mode, const char *cmd) +void kirkwood_restart(enum reboot_mode mode, const char *cmd) { /* * Enable soft reset to assert RSTOUTn. |