diff options
Diffstat (limited to 'kernel/arch/arm/mach-dove/common.c')
| -rw-r--r-- | kernel/arch/arm/mach-dove/common.c | 411 |
1 files changed, 411 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-dove/common.c b/kernel/arch/arm/mach-dove/common.c new file mode 100644 index 000000000..0d1a89298 --- /dev/null +++ b/kernel/arch/arm/mach-dove/common.c @@ -0,0 +1,411 @@ +/* + * arch/arm/mach-dove/common.c + * + * Core functions for Marvell Dove 88AP510 System On Chip + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include <linux/clk-provider.h> +#include <linux/dma-mapping.h> +#include <linux/init.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/platform_data/dma-mv_xor.h> +#include <linux/platform_data/usb-ehci-orion.h> +#include <linux/platform_device.h> +#include <asm/hardware/cache-tauros2.h> +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/time.h> +#include <mach/bridge-regs.h> +#include <mach/pm.h> +#include <plat/common.h> +#include <plat/irq.h> +#include <plat/time.h> +#include "common.h" + +/* These can go away once Dove uses the mvebu-mbus DT binding */ +#define DOVE_MBUS_PCIE0_MEM_TARGET 0x4 +#define DOVE_MBUS_PCIE0_MEM_ATTR 0xe8 +#define DOVE_MBUS_PCIE0_IO_TARGET 0x4 +#define DOVE_MBUS_PCIE0_IO_ATTR 0xe0 +#define DOVE_MBUS_PCIE1_MEM_TARGET 0x8 +#define DOVE_MBUS_PCIE1_MEM_ATTR 0xe8 +#define DOVE_MBUS_PCIE1_IO_TARGET 0x8 +#define DOVE_MBUS_PCIE1_IO_ATTR 0xe0 +#define DOVE_MBUS_CESA_TARGET 0x3 +#define DOVE_MBUS_CESA_ATTR 0x1 +#define DOVE_MBUS_BOOTROM_TARGET 0x1 +#define DOVE_MBUS_BOOTROM_ATTR 0xfd +#define DOVE_MBUS_SCRATCHPAD_TARGET 0xd +#define DOVE_MBUS_SCRATCHPAD_ATTR 0x0 + +/***************************************************************************** + * I/O Address Mapping + ****************************************************************************/ +static struct map_desc dove_io_desc[] __initdata = { + { + .virtual = (unsigned long) DOVE_SB_REGS_VIRT_BASE, + .pfn = __phys_to_pfn(DOVE_SB_REGS_PHYS_BASE), + .length = DOVE_SB_REGS_SIZE, + .type = MT_DEVICE, + }, { + .virtual = (unsigned long) DOVE_NB_REGS_VIRT_BASE, + .pfn = __phys_to_pfn(DOVE_NB_REGS_PHYS_BASE), + .length = DOVE_NB_REGS_SIZE, + .type = MT_DEVICE, + }, +}; + +void __init dove_map_io(void) +{ + iotable_init(dove_io_desc, ARRAY_SIZE(dove_io_desc)); +} + +/***************************************************************************** + * CLK tree + ****************************************************************************/ +static int dove_tclk; + +static DEFINE_SPINLOCK(gating_lock); +static struct clk *tclk; + +static struct clk __init *dove_register_gate(const char *name, + const char *parent, u8 bit_idx) +{ + return clk_register_gate(NULL, name, parent, 0, + (void __iomem *)CLOCK_GATING_CONTROL, + bit_idx, 0, &gating_lock); +} + +static void __init dove_clk_init(void) +{ + struct clk *usb0, *usb1, *sata, *pex0, *pex1, *sdio0, *sdio1; + struct clk *nand, *camera, *i2s0, *i2s1, *crypto, *ac97, *pdma; + struct clk *xor0, *xor1, *ge, *gephy; + + tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT, + dove_tclk); + + usb0 = dove_register_gate("usb0", "tclk", CLOCK_GATING_BIT_USB0); + usb1 = dove_register_gate("usb1", "tclk", CLOCK_GATING_BIT_USB1); + sata = dove_register_gate("sata", "tclk", CLOCK_GATING_BIT_SATA); + pex0 = dove_register_gate("pex0", "tclk", CLOCK_GATING_BIT_PCIE0); + pex1 = dove_register_gate("pex1", "tclk", CLOCK_GATING_BIT_PCIE1); + sdio0 = dove_register_gate("sdio0", "tclk", CLOCK_GATING_BIT_SDIO0); + sdio1 = dove_register_gate("sdio1", "tclk", CLOCK_GATING_BIT_SDIO1); + nand = dove_register_gate("nand", "tclk", CLOCK_GATING_BIT_NAND); + camera = dove_register_gate("camera", "tclk", CLOCK_GATING_BIT_CAMERA); + i2s0 = dove_register_gate("i2s0", "tclk", CLOCK_GATING_BIT_I2S0); + i2s1 = dove_register_gate("i2s1", "tclk", CLOCK_GATING_BIT_I2S1); + crypto = dove_register_gate("crypto", "tclk", CLOCK_GATING_BIT_CRYPTO); + ac97 = dove_register_gate("ac97", "tclk", CLOCK_GATING_BIT_AC97); + pdma = dove_register_gate("pdma", "tclk", CLOCK_GATING_BIT_PDMA); + xor0 = dove_register_gate("xor0", "tclk", CLOCK_GATING_BIT_XOR0); + xor1 = dove_register_gate("xor1", "tclk", CLOCK_GATING_BIT_XOR1); + gephy = dove_register_gate("gephy", "tclk", CLOCK_GATING_BIT_GIGA_PHY); + ge = dove_register_gate("ge", "gephy", CLOCK_GATING_BIT_GBE); + + orion_clkdev_add(NULL, "orion_spi.0", tclk); + orion_clkdev_add(NULL, "orion_spi.1", tclk); + orion_clkdev_add(NULL, "orion_wdt", tclk); + orion_clkdev_add(NULL, "mv64xxx_i2c.0", tclk); + + orion_clkdev_add(NULL, "orion-ehci.0", usb0); + orion_clkdev_add(NULL, "orion-ehci.1", usb1); + orion_clkdev_add(NULL, "mv643xx_eth_port.0", ge); + orion_clkdev_add(NULL, "sata_mv.0", sata); + orion_clkdev_add("0", "pcie", pex0); + orion_clkdev_add("1", "pcie", pex1); + orion_clkdev_add(NULL, "sdhci-dove.0", sdio0); + orion_clkdev_add(NULL, "sdhci-dove.1", sdio1); + orion_clkdev_add(NULL, "orion_nand", nand); + orion_clkdev_add(NULL, "cafe1000-ccic.0", camera); + orion_clkdev_add(NULL, "mvebu-audio.0", i2s0); + orion_clkdev_add(NULL, "mvebu-audio.1", i2s1); + orion_clkdev_add(NULL, "mv_crypto", crypto); + orion_clkdev_add(NULL, "dove-ac97", ac97); + orion_clkdev_add(NULL, "dove-pdma", pdma); + orion_clkdev_add(NULL, MV_XOR_NAME ".0", xor0); + orion_clkdev_add(NULL, MV_XOR_NAME ".1", xor1); +} + +/***************************************************************************** + * EHCI0 + ****************************************************************************/ +void __init dove_ehci0_init(void) +{ + orion_ehci_init(DOVE_USB0_PHYS_BASE, IRQ_DOVE_USB0, EHCI_PHY_NA); +} + +/***************************************************************************** + * EHCI1 + ****************************************************************************/ +void __init dove_ehci1_init(void) +{ + orion_ehci_1_init(DOVE_USB1_PHYS_BASE, IRQ_DOVE_USB1); +} + +/***************************************************************************** + * GE00 + ****************************************************************************/ +void __init dove_ge00_init(struct mv643xx_eth_platform_data *eth_data) +{ + orion_ge00_init(eth_data, DOVE_GE00_PHYS_BASE, + IRQ_DOVE_GE00_SUM, IRQ_DOVE_GE00_ERR, + 1600); +} + +/***************************************************************************** + * SoC RTC + ****************************************************************************/ +static void __init dove_rtc_init(void) +{ + orion_rtc_init(DOVE_RTC_PHYS_BASE, IRQ_DOVE_RTC); +} + +/***************************************************************************** + * SATA + ****************************************************************************/ +void __init dove_sata_init(struct mv_sata_platform_data *sata_data) +{ + orion_sata_init(sata_data, DOVE_SATA_PHYS_BASE, IRQ_DOVE_SATA); + +} + +/***************************************************************************** + * UART0 + ****************************************************************************/ +void __init dove_uart0_init(void) +{ + orion_uart0_init(DOVE_UART0_VIRT_BASE, DOVE_UART0_PHYS_BASE, + IRQ_DOVE_UART_0, tclk); +} + +/***************************************************************************** + * UART1 + ****************************************************************************/ +void __init dove_uart1_init(void) +{ + orion_uart1_init(DOVE_UART1_VIRT_BASE, DOVE_UART1_PHYS_BASE, + IRQ_DOVE_UART_1, tclk); +} + +/***************************************************************************** + * UART2 + ****************************************************************************/ +void __init dove_uart2_init(void) +{ + orion_uart2_init(DOVE_UART2_VIRT_BASE, DOVE_UART2_PHYS_BASE, + IRQ_DOVE_UART_2, tclk); +} + +/***************************************************************************** + * UART3 + ****************************************************************************/ +void __init dove_uart3_init(void) +{ + orion_uart3_init(DOVE_UART3_VIRT_BASE, DOVE_UART3_PHYS_BASE, + IRQ_DOVE_UART_3, tclk); +} + +/***************************************************************************** + * SPI + ****************************************************************************/ +void __init dove_spi0_init(void) +{ + orion_spi_init(DOVE_SPI0_PHYS_BASE); +} + +void __init dove_spi1_init(void) +{ + orion_spi_1_init(DOVE_SPI1_PHYS_BASE); +} + +/***************************************************************************** + * I2C + ****************************************************************************/ +void __init dove_i2c_init(void) +{ + orion_i2c_init(DOVE_I2C_PHYS_BASE, IRQ_DOVE_I2C, 10); +} + +/***************************************************************************** + * Time handling + ****************************************************************************/ +void __init dove_init_early(void) +{ + orion_time_set_base(TIMER_VIRT_BASE); + mvebu_mbus_init("marvell,dove-mbus", + BRIDGE_WINS_BASE, BRIDGE_WINS_SZ, + DOVE_MC_WINS_BASE, DOVE_MC_WINS_SZ); +} + +static int __init dove_find_tclk(void) +{ + return 166666667; +} + +void __init dove_timer_init(void) +{ + dove_tclk = dove_find_tclk(); + orion_time_init(BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR, + IRQ_DOVE_BRIDGE, dove_tclk); +} + +/***************************************************************************** + * XOR 0 + ****************************************************************************/ +static void __init dove_xor0_init(void) +{ + orion_xor0_init(DOVE_XOR0_PHYS_BASE, DOVE_XOR0_HIGH_PHYS_BASE, + IRQ_DOVE_XOR_00, IRQ_DOVE_XOR_01); +} + +/***************************************************************************** + * XOR 1 + ****************************************************************************/ +static void __init dove_xor1_init(void) +{ + orion_xor1_init(DOVE_XOR1_PHYS_BASE, DOVE_XOR1_HIGH_PHYS_BASE, + IRQ_DOVE_XOR_10, IRQ_DOVE_XOR_11); +} + +/***************************************************************************** + * SDIO + ****************************************************************************/ +static u64 sdio_dmamask = DMA_BIT_MASK(32); + +static struct resource dove_sdio0_resources[] = { + { + .start = DOVE_SDIO0_PHYS_BASE, + .end = DOVE_SDIO0_PHYS_BASE + 0xff, + .flags = IORESOURCE_MEM, + }, { + .start = IRQ_DOVE_SDIO0, + .end = IRQ_DOVE_SDIO0, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dove_sdio0 = { + .name = "sdhci-dove", + .id = 0, + .dev = { + .dma_mask = &sdio_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, + .resource = dove_sdio0_resources, + .num_resources = ARRAY_SIZE(dove_sdio0_resources), +}; + +void __init dove_sdio0_init(void) +{ + platform_device_register(&dove_sdio0); +} + +static struct resource dove_sdio1_resources[] = { + { + .start = DOVE_SDIO1_PHYS_BASE, + .end = DOVE_SDIO1_PHYS_BASE + 0xff, + .flags = IORESOURCE_MEM, + }, { + .start = IRQ_DOVE_SDIO1, + .end = IRQ_DOVE_SDIO1, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dove_sdio1 = { + .name = "sdhci-dove", + .id = 1, + .dev = { + .dma_mask = &sdio_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, + .resource = dove_sdio1_resources, + .num_resources = ARRAY_SIZE(dove_sdio1_resources), +}; + +void __init dove_sdio1_init(void) +{ + platform_device_register(&dove_sdio1); +} + +void __init dove_setup_cpu_wins(void) +{ + /* + * The PCIe windows will no longer be statically allocated + * here once Dove is migrated to the pci-mvebu driver. The + * non-PCIe windows will no longer be created here once Dove + * fully moves to DT. + */ + mvebu_mbus_add_window_remap_by_id(DOVE_MBUS_PCIE0_IO_TARGET, + DOVE_MBUS_PCIE0_IO_ATTR, + DOVE_PCIE0_IO_PHYS_BASE, + DOVE_PCIE0_IO_SIZE, + DOVE_PCIE0_IO_BUS_BASE); + mvebu_mbus_add_window_remap_by_id(DOVE_MBUS_PCIE1_IO_TARGET, + DOVE_MBUS_PCIE1_IO_ATTR, + DOVE_PCIE1_IO_PHYS_BASE, + DOVE_PCIE1_IO_SIZE, + DOVE_PCIE1_IO_BUS_BASE); + mvebu_mbus_add_window_by_id(DOVE_MBUS_PCIE0_MEM_TARGET, + DOVE_MBUS_PCIE0_MEM_ATTR, + DOVE_PCIE0_MEM_PHYS_BASE, + DOVE_PCIE0_MEM_SIZE); + mvebu_mbus_add_window_by_id(DOVE_MBUS_PCIE1_MEM_TARGET, + DOVE_MBUS_PCIE1_MEM_ATTR, + DOVE_PCIE1_MEM_PHYS_BASE, + DOVE_PCIE1_MEM_SIZE); + mvebu_mbus_add_window_by_id(DOVE_MBUS_CESA_TARGET, + DOVE_MBUS_CESA_ATTR, + DOVE_CESA_PHYS_BASE, + DOVE_CESA_SIZE); + mvebu_mbus_add_window_by_id(DOVE_MBUS_BOOTROM_TARGET, + DOVE_MBUS_BOOTROM_ATTR, + DOVE_BOOTROM_PHYS_BASE, + DOVE_BOOTROM_SIZE); + mvebu_mbus_add_window_by_id(DOVE_MBUS_SCRATCHPAD_TARGET, + DOVE_MBUS_SCRATCHPAD_ATTR, + DOVE_SCRATCHPAD_PHYS_BASE, + DOVE_SCRATCHPAD_SIZE); +} + +void __init dove_init(void) +{ + pr_info("Dove 88AP510 SoC, TCLK = %d MHz.\n", + (dove_tclk + 499999) / 1000000); + +#ifdef CONFIG_CACHE_TAUROS2 + tauros2_init(0); +#endif + dove_setup_cpu_wins(); + + /* Setup root of clk tree */ + dove_clk_init(); + + /* internal devices that every board has */ + dove_rtc_init(); + dove_xor0_init(); + dove_xor1_init(); +} + +void dove_restart(enum reboot_mode mode, const char *cmd) +{ + /* + * Enable soft reset to assert RSTOUTn. + */ + writel(SOFT_RESET_OUT_EN, RSTOUTn_MASK); + + /* + * Assert soft reset. + */ + writel(SOFT_RESET, SYSTEM_SOFT_RESET); + + while (1) + ; +} |