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From d135d94b3d1fe599d13e7198d5f502912d694c13 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@gmail.com>
Date: Sun, 3 Jul 2011 15:00:38 +0200
Subject: [PATCH 29/60] MIPS: BCM63XX: Register SPI flash if present
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
arch/mips/bcm63xx/dev-flash.c | 35 +++++++++++++++++++-
arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h | 2 +
2 files changed, 33 insertions(+), 2 deletions(-)
--- a/arch/mips/bcm63xx/dev-flash.c
+++ b/arch/mips/bcm63xx/dev-flash.c
@@ -17,9 +17,12 @@
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/spi-nor.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
#include <bcm63xx_cpu.h>
#include <bcm63xx_dev_flash.h>
+#include <bcm63xx_dev_hsspi.h>
#include <bcm63xx_regs.h>
#include <bcm63xx_io.h>
@@ -66,6 +69,21 @@ void __init bcm63xx_flash_force_phys_bas
mtd_resources[0].end = end;
}
+static struct flash_platform_data bcm63xx_flash_data = {
+ .part_probe_types = bcm63xx_part_types,
+};
+
+static struct spi_board_info bcm63xx_spi_flash_info[] = {
+ {
+ .bus_num = 0,
+ .chip_select = 0,
+ .mode = 0,
+ .max_speed_hz = 781000,
+ .modalias = "m25p80",
+ .platform_data = &bcm63xx_flash_data,
+ },
+};
+
static int __init bcm63xx_detect_flash_type(void)
{
u32 val;
@@ -73,9 +91,15 @@ static int __init bcm63xx_detect_flash_t
switch (bcm63xx_get_cpu_id()) {
case BCM6318_CPU_ID:
/* only support serial flash */
+ bcm63xx_spi_flash_info[0].max_speed_hz = 62500000;
return BCM63XX_FLASH_TYPE_SERIAL;
case BCM6328_CPU_ID:
val = bcm_misc_readl(MISC_STRAPBUS_6328_REG);
+ if (val & STRAPBUS_6328_HSSPI_CLK_FAST)
+ bcm63xx_spi_flash_info[0].max_speed_hz = 33333334;
+ else
+ bcm63xx_spi_flash_info[0].max_speed_hz = 16666667;
+
if (val & STRAPBUS_6328_BOOT_SEL_SERIAL)
return BCM63XX_FLASH_TYPE_SERIAL;
else
@@ -94,12 +118,20 @@ static int __init bcm63xx_detect_flash_t
return BCM63XX_FLASH_TYPE_SERIAL;
case BCM6362_CPU_ID:
val = bcm_misc_readl(MISC_STRAPBUS_6362_REG);
+ if (val & STRAPBUS_6362_HSSPI_CLK_FAST)
+ bcm63xx_spi_flash_info[0].max_speed_hz = 50000000;
+ else
+ bcm63xx_spi_flash_info[0].max_speed_hz = 20000000;
+
if (val & STRAPBUS_6362_BOOT_SEL_SERIAL)
return BCM63XX_FLASH_TYPE_SERIAL;
else
return BCM63XX_FLASH_TYPE_NAND;
case BCM6368_CPU_ID:
val = bcm_gpio_readl(GPIO_STRAPBUS_REG);
+ if (val & STRAPBUS_6368_SPI_CLK_FAST)
+ bcm63xx_spi_flash_info[0].max_speed_hz = 20000000;
+
switch (val & STRAPBUS_6368_BOOT_SEL_MASK) {
case STRAPBUS_6368_BOOT_SEL_NAND:
return BCM63XX_FLASH_TYPE_NAND;
@@ -110,6 +142,11 @@ static int __init bcm63xx_detect_flash_t
}
case BCM63268_CPU_ID:
val = bcm_misc_readl(MISC_STRAPBUS_63268_REG);
+ if (val & STRAPBUS_63268_HSSPI_CLK_FAST)
+ bcm63xx_spi_flash_info[0].max_speed_hz = 50000000;
+ else
+ bcm63xx_spi_flash_info[0].max_speed_hz = 20000000;
+
if (val & STRAPBUS_63268_BOOT_SEL_SERIAL)
return BCM63XX_FLASH_TYPE_SERIAL;
else
@@ -195,8 +232,14 @@ int __init bcm63xx_flash_register(void)
return platform_device_register(&mtd_dev);
case BCM63XX_FLASH_TYPE_SERIAL:
- pr_warn("unsupported serial flash detected\n");
- return -ENODEV;
+ if (BCMCPU_IS_6318() || BCMCPU_IS_6328() || BCMCPU_IS_6362() ||
+ BCMCPU_IS_63268()) {
+ bcm63xx_spi_flash_info[0].bus_num = 1;
+ bcm63xx_spi_flash_info[0].mode = SPI_RX_DUAL;
+ }
+
+ return spi_register_board_info(bcm63xx_spi_flash_info,
+ ARRAY_SIZE(bcm63xx_spi_flash_info));
case BCM63XX_FLASH_TYPE_NAND:
pr_warn("unsupported NAND flash detected\n");
return -ENODEV;
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
@@ -708,6 +708,7 @@
#define GPIO_STRAPBUS_REG 0x40
#define STRAPBUS_6358_BOOT_SEL_PARALLEL (1 << 1)
#define STRAPBUS_6358_BOOT_SEL_SERIAL (0 << 1)
+#define STRAPBUS_6368_SPI_CLK_FAST (1 << 6)
#define STRAPBUS_6368_BOOT_SEL_MASK 0x3
#define STRAPBUS_6368_BOOT_SEL_NAND 0
#define STRAPBUS_6368_BOOT_SEL_SERIAL 1
@@ -1564,6 +1565,7 @@
#define IDDQ_CTRL_63268_USBH (1 << 4)
#define MISC_STRAPBUS_6328_REG 0x240
+#define STRAPBUS_6328_HSSPI_CLK_FAST (1 << 4)
#define STRAPBUS_6328_FCVO_SHIFT 7
#define STRAPBUS_6328_FCVO_MASK (0x1f << STRAPBUS_6328_FCVO_SHIFT)
#define STRAPBUS_6328_BOOT_SEL_SERIAL (1 << 28)
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