diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-3.3/420-MIPS-BCM63XX-Register-SPI-flash-if-present.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-3.3/420-MIPS-BCM63XX-Register-SPI-flash-if-present.patch | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-3.3/420-MIPS-BCM63XX-Register-SPI-flash-if-present.patch b/target/linux/brcm63xx/patches-3.3/420-MIPS-BCM63XX-Register-SPI-flash-if-present.patch new file mode 100644 index 0000000..f83dbcf --- /dev/null +++ b/target/linux/brcm63xx/patches-3.3/420-MIPS-BCM63XX-Register-SPI-flash-if-present.patch @@ -0,0 +1,89 @@ +From a1e3ef9af3e3a7283ced5fd079ef7e8bc4e2deca 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 55/79] MIPS: BCM63XX: Register SPI flash if present + +Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> +--- + arch/mips/bcm63xx/dev-flash.c | 29 +++++++++++++++++++-- + arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h | 1 + + 2 files changed, 28 insertions(+), 2 deletions(-) + +--- a/arch/mips/bcm63xx/dev-flash.c ++++ b/arch/mips/bcm63xx/dev-flash.c +@@ -15,9 +15,12 @@ + #include <linux/mtd/mtd.h> + #include <linux/mtd/partitions.h> + #include <linux/mtd/physmap.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> + +@@ -54,12 +57,28 @@ static struct platform_device mtd_dev = + }, + }; + ++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; + + switch (bcm63xx_get_cpu_id()) { + case BCM6328_CPU_ID: ++ bcm63xx_spi_flash_info[0].max_speed_hz = 40000000; + val = bcm_misc_readl(MISC_STRAPBUS_6328_REG); + if (val & STRAPBUS_6328_BOOT_SEL_SERIAL) + return BCM63XX_FLASH_TYPE_SERIAL; +@@ -78,6 +97,9 @@ static int __init bcm63xx_detect_flash_t + return BCM63XX_FLASH_TYPE_SERIAL; + 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; +@@ -109,8 +131,11 @@ 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_6328()) ++ bcm63xx_flash_data.max_transfer_len = HS_SPI_BUFFER_LEN; ++ ++ 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 +@@ -555,6 +555,7 @@ + #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 |