/* * Chip-specific setup code for the AT91SAM9x5 family * * Copyright (C) 2010-2012 Atmel Corporation. * * Licensed under GPLv2 or later. */ #include #include #include #include #include #include #include #include #include #include "soc.h" #include "generic.h" #include "clock.h" #include "sam9_smc.h" /* -------------------------------------------------------------------- * Clocks * -------------------------------------------------------------------- */ /* * The peripheral clocks. */ static struct clk pioAB_clk = { .name = "pioAB_clk", .pmc_mask = 1 << AT91SAM9X5_ID_PIOAB, .type = CLK_TYPE_PERIPHERAL, }; static struct clk pioCD_clk = { .name = "pioCD_clk", .pmc_mask = 1 << AT91SAM9X5_ID_PIOCD, .type = CLK_TYPE_PERIPHERAL, }; static struct clk smd_clk = { .name = "smd_clk", .pmc_mask = 1 << AT91SAM9X5_ID_SMD, .type = CLK_TYPE_PERIPHERAL, }; static struct clk usart0_clk = { .name = "usart0_clk", .pmc_mask = 1 << AT91SAM9X5_ID_USART0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk usart1_clk = { .name = "usart1_clk", .pmc_mask = 1 << AT91SAM9X5_ID_USART1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk usart2_clk = { .name = "usart2_clk", .pmc_mask = 1 << AT91SAM9X5_ID_USART2, .type = CLK_TYPE_PERIPHERAL, }; /* USART3 clock - Only for sam9g25/sam9x25 */ static struct clk usart3_clk = { .name = "usart3_clk", .pmc_mask = 1 << AT91SAM9X5_ID_USART3, .type = CLK_TYPE_PERIPHERAL, }; static struct clk twi0_clk = { .name = "twi0_clk", .pmc_mask = 1 << AT91SAM9X5_ID_TWI0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk twi1_clk = { .name = "twi1_clk", .pmc_mask = 1 << AT91SAM9X5_ID_TWI1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk twi2_clk = { .name = "twi2_clk", .pmc_mask = 1 << AT91SAM9X5_ID_TWI2, .type = CLK_TYPE_PERIPHERAL, }; static struct clk mmc0_clk = { .name = "mci0_clk", .pmc_mask = 1 << AT91SAM9X5_ID_MCI0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk spi0_clk = { .name = "spi0_clk", .pmc_mask = 1 << AT91SAM9X5_ID_SPI0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk spi1_clk = { .name = "spi1_clk", .pmc_mask = 1 << AT91SAM9X5_ID_SPI1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk uart0_clk = { .name = "uart0_clk", .pmc_mask = 1 << AT91SAM9X5_ID_UART0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk uart1_clk = { .name = "uart1_clk", .pmc_mask = 1 << AT91SAM9X5_ID_UART1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk tcb0_clk = { .name = "tcb0_clk", .pmc_mask = 1 << AT91SAM9X5_ID_TCB, .type = CLK_TYPE_PERIPHERAL, }; static struct clk pwm_clk = { .name = "pwm_clk", .pmc_mask = 1 << AT91SAM9X5_ID_PWM, .type = CLK_TYPE_PERIPHERAL, }; static struct clk adc_clk = { .name = "adc_clk", .pmc_mask = 1 << AT91SAM9X5_ID_ADC, .type = CLK_TYPE_PERIPHERAL, }; static struct clk adc_op_clk = { .name = "adc_op_clk", .type = CLK_TYPE_PERIPHERAL, .rate_hz = 5000000, }; static struct clk dma0_clk = { .name = "dma0_clk", .pmc_mask = 1 << AT91SAM9X5_ID_DMA0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk dma1_clk = { .name = "dma1_clk", .pmc_mask = 1 << AT91SAM9X5_ID_DMA1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk uhphs_clk = { .name = "uhphs", .pmc_mask = 1 << AT91SAM9X5_ID_UHPHS, .type = CLK_TYPE_PERIPHERAL, }; static struct clk udphs_clk = { .name = "udphs_clk", .pmc_mask = 1 << AT91SAM9X5_ID_UDPHS, .type = CLK_TYPE_PERIPHERAL, }; /* emac0 clock - Only for sam9g25/sam9x25/sam9g35/sam9x35 */ static struct clk macb0_clk = { .name = "pclk", .pmc_mask = 1 << AT91SAM9X5_ID_EMAC0, .type = CLK_TYPE_PERIPHERAL, }; /* lcd clock - Only for sam9g15/sam9g35/sam9x35 */ static struct clk lcdc_clk = { .name = "lcdc_clk", .pmc_mask = 1 << AT91SAM9X5_ID_LCDC, .type = CLK_TYPE_PERIPHERAL, }; /* isi clock - Only for sam9g25 */ static struct clk isi_clk = { .name = "isi_clk", .pmc_mask = 1 << AT91SAM9X5_ID_ISI, .type = CLK_TYPE_PERIPHERAL, }; static struct clk mmc1_clk = { .name = "mci1_clk", .pmc_mask = 1 << AT91SAM9X5_ID_MCI1, .type = CLK_TYPE_PERIPHERAL, }; /* emac1 clock - Only for sam9x25 */ static struct clk macb1_clk = { .name = "pclk", .pmc_mask = 1 << AT91SAM9X5_ID_EMAC1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk ssc_clk = { .name = "ssc_clk", .pmc_mask = 1 << AT91SAM9X5_ID_SSC, .type = CLK_TYPE_PERIPHERAL, }; /* can0 clock - Only for sam9x35 */ static struct clk can0_clk = { .name = "can0_clk", .pmc_mask = 1 << AT91SAM9X5_ID_CAN0, .type = CLK_TYPE_PERIPHERAL, }; /* can1 clock - Only for sam9x35 */ static struct clk can1_clk = { .name = "can1_clk", .pmc_mask = 1 << AT91SAM9X5_ID_CAN1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk *periph_clocks[] __initdata = { &pioAB_clk, &pioCD_clk, &smd_clk, &usart0_clk, &usart1_clk, &usart2_clk, &twi0_clk, &twi1_clk, &twi2_clk, &mmc0_clk, &spi0_clk, &spi1_clk, &uart0_clk, &uart1_clk, &tcb0_clk, &pwm_clk, &adc_clk, &adc_op_clk, &dma0_clk, &dma1_clk, &uhphs_clk, &udphs_clk, &mmc1_clk, &ssc_clk, // irq0 }; static struct clk_lookup periph_clocks_lookups[] = { /* lookup table for DT entries */ CLKDEV_CON_DEV_ID("usart", "fffff200.serial", &mck), CLKDEV_CON_DEV_ID("usart", "f801c000.serial", &usart0_clk), CLKDEV_CON_DEV_ID("usart", "f8020000.serial", &usart1_clk), CLKDEV_CON_DEV_ID("usart", "f8024000.serial", &usart2_clk), CLKDEV_CON_DEV_ID("usart", "f8028000.serial", &usart3_clk), CLKDEV_CON_DEV_ID("t0_clk", "f8008000.timer", &tcb0_clk), CLKDEV_CON_DEV_ID("t0_clk", "f800c000.timer", &tcb0_clk), CLKDEV_CON_DEV_ID("dma_clk", "ffffec00.dma-controller", &dma0_clk), CLKDEV_CON_DEV_ID("dma_clk", "ffffee00.dma-controller", &dma1_clk), CLKDEV_CON_DEV_ID(NULL, "at91_i2c.0", &twi0_clk), CLKDEV_CON_DEV_ID(NULL, "at91_i2c.1", &twi1_clk), CLKDEV_CON_DEV_ID(NULL, "at91_i2c.2", &twi2_clk), CLKDEV_CON_ID("pioA", &pioAB_clk), CLKDEV_CON_ID("pioB", &pioAB_clk), CLKDEV_CON_ID("pioC", &pioCD_clk), CLKDEV_CON_ID("pioD", &pioCD_clk), /* additional fake clock for macb_hclk */ CLKDEV_CON_DEV_ID("hclk", "f802c000.ethernet", &macb0_clk), CLKDEV_CON_DEV_ID("hclk", "f8030000.ethernet", &macb1_clk), CLKDEV_CON_DEV_ID("hclk", "600000.ohci", &uhphs_clk), CLKDEV_CON_DEV_ID("ohci_clk", "600000.ohci", &uhphs_clk), CLKDEV_CON_DEV_ID("ehci_clk", "700000.ehci", &uhphs_clk), }; /* * The two programmable clocks. * You must configure pin multiplexing to bring these signals out. */ static struct clk pck0 = { .name = "pck0", .pmc_mask = AT91_PMC_PCK0, .type = CLK_TYPE_PROGRAMMABLE, .id = 0, }; static struct clk pck1 = { .name = "pck1", .pmc_mask = AT91_PMC_PCK1, .type = CLK_TYPE_PROGRAMMABLE, .id = 1, }; static void __init at91sam9x5_register_clocks(void) { int i; for (i = 0; i < ARRAY_SIZE(periph_clocks); i++) clk_register(periph_clocks[i]); clkdev_add_table(periph_clocks_lookups, ARRAY_SIZE(periph_clocks_lookups)); if (cpu_is_at91sam9g25() || cpu_is_at91sam9x25()) clk_register(&usart3_clk); if (cpu_is_at91sam9g25() || cpu_is_at91sam9x25() || cpu_is_at91sam9g35() || cpu_is_at91sam9x35()) clk_register(&macb0_clk); if (cpu_is_at91sam9g15() || cpu_is_at91sam9g35() || cpu_is_at91sam9x35()) clk_register(&lcdc_clk); if (cpu_is_at91sam9g25()) clk_register(&isi_clk); if (cpu_is_at91sam9x25()) clk_register(&macb1_clk); if (cpu_is_at91sam9x25() || cpu_is_at91sam9x35()) { clk_register(&can0_clk); clk_register(&can1_clk); } clk_register(&pck0); clk_register(&pck1); } /* -------------------------------------------------------------------- * AT91SAM9x5 processor initialization * -------------------------------------------------------------------- */ static void __init at91sam9x5_map_io(void) { at91_init_sram(0, AT91SAM9X5_SRAM_BASE, AT91SAM9X5_SRAM_SIZE); } void __init at91sam9x5_initialize(void) { /* Register GPIO subsystem (using DT) */ at91_gpio_init(NULL, 0); } /* -------------------------------------------------------------------- * Interrupt initialization * -------------------------------------------------------------------- */ struct at91_init_soc __initdata at91sam9x5_soc = { .map_io = at91sam9x5_map_io, .register_clocks = at91sam9x5_register_clocks, .init = at91sam9x5_initialize, };