forked from Minki/linux
49fe2ba313
Create a new device tree source file for Atmel at91sam9g45 SoC family. The Evaluation Kit at91sam9m10g45ek includes it. This first basic support will be populated as drivers and boards will be converted to device tree. Contains serial, dma and interrupt controllers. The generic board file still takes advantage of platform data for early serial init. As we need a storage media and the NAND flash driver is not converted to DT yet, we keep old initialization for it. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Reviewed-by: Rob Herring <rob.herring@calxeda.com>
388 lines
10 KiB
C
388 lines
10 KiB
C
/*
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* Chip-specific setup code for the AT91SAM9G45 family
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*
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* Copyright (C) 2009 Atmel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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*/
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#include <linux/module.h>
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#include <linux/pm.h>
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#include <asm/irq.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <mach/at91sam9g45.h>
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#include <mach/at91_pmc.h>
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#include <mach/at91_rstc.h>
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#include <mach/at91_shdwc.h>
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#include <mach/cpu.h>
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#include "soc.h"
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#include "generic.h"
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#include "clock.h"
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/* --------------------------------------------------------------------
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* Clocks
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* -------------------------------------------------------------------- */
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/*
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* The peripheral clocks.
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*/
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static struct clk pioA_clk = {
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.name = "pioA_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_PIOA,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk pioB_clk = {
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.name = "pioB_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_PIOB,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk pioC_clk = {
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.name = "pioC_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_PIOC,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk pioDE_clk = {
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.name = "pioDE_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_PIODE,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk usart0_clk = {
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.name = "usart0_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_US0,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk usart1_clk = {
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.name = "usart1_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_US1,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk usart2_clk = {
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.name = "usart2_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_US2,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk usart3_clk = {
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.name = "usart3_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_US3,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk mmc0_clk = {
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.name = "mci0_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_MCI0,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk twi0_clk = {
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.name = "twi0_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_TWI0,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk twi1_clk = {
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.name = "twi1_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_TWI1,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk spi0_clk = {
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.name = "spi0_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_SPI0,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk spi1_clk = {
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.name = "spi1_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_SPI1,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk ssc0_clk = {
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.name = "ssc0_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_SSC0,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk ssc1_clk = {
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.name = "ssc1_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_SSC1,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk tcb0_clk = {
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.name = "tcb0_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_TCB,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk pwm_clk = {
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.name = "pwm_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_PWMC,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk tsc_clk = {
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.name = "tsc_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_TSC,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk dma_clk = {
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.name = "dma_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_DMA,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk uhphs_clk = {
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.name = "uhphs_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_UHPHS,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk lcdc_clk = {
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.name = "lcdc_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_LCDC,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk ac97_clk = {
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.name = "ac97_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_AC97C,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk macb_clk = {
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.name = "macb_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_EMAC,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk isi_clk = {
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.name = "isi_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_ISI,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk udphs_clk = {
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.name = "udphs_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_UDPHS,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk mmc1_clk = {
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.name = "mci1_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_MCI1,
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.type = CLK_TYPE_PERIPHERAL,
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};
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/* Video decoder clock - Only for sam9m10/sam9m11 */
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static struct clk vdec_clk = {
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.name = "vdec_clk",
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.pmc_mask = 1 << AT91SAM9G45_ID_VDEC,
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.type = CLK_TYPE_PERIPHERAL,
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};
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static struct clk *periph_clocks[] __initdata = {
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&pioA_clk,
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&pioB_clk,
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&pioC_clk,
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&pioDE_clk,
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&usart0_clk,
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&usart1_clk,
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&usart2_clk,
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&usart3_clk,
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&mmc0_clk,
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&twi0_clk,
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&twi1_clk,
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&spi0_clk,
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&spi1_clk,
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&ssc0_clk,
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&ssc1_clk,
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&tcb0_clk,
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&pwm_clk,
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&tsc_clk,
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&dma_clk,
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&uhphs_clk,
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&lcdc_clk,
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&ac97_clk,
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&macb_clk,
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&isi_clk,
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&udphs_clk,
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&mmc1_clk,
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// irq0
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};
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static struct clk_lookup periph_clocks_lookups[] = {
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/* One additional fake clock for ohci */
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CLKDEV_CON_ID("ohci_clk", &uhphs_clk),
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CLKDEV_CON_DEV_ID("ehci_clk", "atmel-ehci", &uhphs_clk),
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CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk),
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CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk),
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CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.0", &mmc0_clk),
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CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.1", &mmc1_clk),
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CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
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CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
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CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb0_clk),
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CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tcb0_clk),
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CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
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CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
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/* more usart lookup table for DT entries */
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CLKDEV_CON_DEV_ID("usart", "ffffee00.serial", &mck),
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CLKDEV_CON_DEV_ID("usart", "fff8c000.serial", &usart0_clk),
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CLKDEV_CON_DEV_ID("usart", "fff90000.serial", &usart1_clk),
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CLKDEV_CON_DEV_ID("usart", "fff94000.serial", &usart2_clk),
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CLKDEV_CON_DEV_ID("usart", "fff98000.serial", &usart3_clk),
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};
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static struct clk_lookup usart_clocks_lookups[] = {
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CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
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CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
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CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
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CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
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CLKDEV_CON_DEV_ID("usart", "atmel_usart.4", &usart3_clk),
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};
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/*
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* The two programmable clocks.
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* You must configure pin multiplexing to bring these signals out.
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*/
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static struct clk pck0 = {
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.name = "pck0",
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.pmc_mask = AT91_PMC_PCK0,
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.type = CLK_TYPE_PROGRAMMABLE,
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.id = 0,
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};
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static struct clk pck1 = {
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.name = "pck1",
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.pmc_mask = AT91_PMC_PCK1,
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.type = CLK_TYPE_PROGRAMMABLE,
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.id = 1,
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};
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static void __init at91sam9g45_register_clocks(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
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clk_register(periph_clocks[i]);
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clkdev_add_table(periph_clocks_lookups,
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ARRAY_SIZE(periph_clocks_lookups));
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clkdev_add_table(usart_clocks_lookups,
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ARRAY_SIZE(usart_clocks_lookups));
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if (cpu_is_at91sam9m10() || cpu_is_at91sam9m11())
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clk_register(&vdec_clk);
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clk_register(&pck0);
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clk_register(&pck1);
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}
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static struct clk_lookup console_clock_lookup;
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void __init at91sam9g45_set_console_clock(int id)
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{
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if (id >= ARRAY_SIZE(usart_clocks_lookups))
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return;
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console_clock_lookup.con_id = "usart";
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console_clock_lookup.clk = usart_clocks_lookups[id].clk;
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clkdev_add(&console_clock_lookup);
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}
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/* --------------------------------------------------------------------
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* GPIO
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* -------------------------------------------------------------------- */
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static struct at91_gpio_bank at91sam9g45_gpio[] = {
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{
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.id = AT91SAM9G45_ID_PIOA,
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.offset = AT91_PIOA,
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.clock = &pioA_clk,
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}, {
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.id = AT91SAM9G45_ID_PIOB,
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.offset = AT91_PIOB,
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.clock = &pioB_clk,
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}, {
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.id = AT91SAM9G45_ID_PIOC,
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.offset = AT91_PIOC,
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.clock = &pioC_clk,
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}, {
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.id = AT91SAM9G45_ID_PIODE,
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.offset = AT91_PIOD,
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.clock = &pioDE_clk,
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}, {
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.id = AT91SAM9G45_ID_PIODE,
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.offset = AT91_PIOE,
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.clock = &pioDE_clk,
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}
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};
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static void at91sam9g45_reset(void)
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{
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at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
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}
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static void at91sam9g45_poweroff(void)
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{
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at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
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}
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/* --------------------------------------------------------------------
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* AT91SAM9G45 processor initialization
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* -------------------------------------------------------------------- */
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static void __init at91sam9g45_map_io(void)
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{
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at91_init_sram(0, AT91SAM9G45_SRAM_BASE, AT91SAM9G45_SRAM_SIZE);
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}
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static void __init at91sam9g45_initialize(void)
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{
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at91_arch_reset = at91sam9g45_reset;
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pm_power_off = at91sam9g45_poweroff;
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at91_extern_irq = (1 << AT91SAM9G45_ID_IRQ0);
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/* Register GPIO subsystem */
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at91_gpio_init(at91sam9g45_gpio, 5);
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}
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/* --------------------------------------------------------------------
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* Interrupt initialization
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* -------------------------------------------------------------------- */
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/*
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* The default interrupt priority levels (0 = lowest, 7 = highest).
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*/
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static unsigned int at91sam9g45_default_irq_priority[NR_AIC_IRQS] __initdata = {
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7, /* Advanced Interrupt Controller (FIQ) */
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7, /* System Peripherals */
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1, /* Parallel IO Controller A */
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1, /* Parallel IO Controller B */
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1, /* Parallel IO Controller C */
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1, /* Parallel IO Controller D and E */
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0,
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5, /* USART 0 */
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5, /* USART 1 */
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5, /* USART 2 */
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5, /* USART 3 */
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0, /* Multimedia Card Interface 0 */
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6, /* Two-Wire Interface 0 */
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6, /* Two-Wire Interface 1 */
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5, /* Serial Peripheral Interface 0 */
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5, /* Serial Peripheral Interface 1 */
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4, /* Serial Synchronous Controller 0 */
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4, /* Serial Synchronous Controller 1 */
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0, /* Timer Counter 0, 1, 2, 3, 4 and 5 */
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0, /* Pulse Width Modulation Controller */
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0, /* Touch Screen Controller */
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0, /* DMA Controller */
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2, /* USB Host High Speed port */
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3, /* LDC Controller */
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5, /* AC97 Controller */
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3, /* Ethernet */
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0, /* Image Sensor Interface */
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2, /* USB Device High speed port */
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0,
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0, /* Multimedia Card Interface 1 */
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0,
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0, /* Advanced Interrupt Controller (IRQ0) */
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};
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struct at91_init_soc __initdata at91sam9g45_soc = {
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.map_io = at91sam9g45_map_io,
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.default_irq_priority = at91sam9g45_default_irq_priority,
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.register_clocks = at91sam9g45_register_clocks,
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.init = at91sam9g45_initialize,
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};
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