brcm63xx: add linux 4.4 support

[openwrt/svn-archive/archive.git] / target / linux / brcm63xx / patches-4.4 / 411-MIPS-BCM63XX-Register-SPI-flash-if-present.patch

diff --git a/target/linux/brcm63xx/patches-4.4/411-MIPS-BCM63XX-Register-SPI-flash-if-present.patch b/target/linux/brcm63xx/patches-4.4/411-MIPS-BCM63XX-Register-SPI-flash-if-present.patch
new file mode 100644 (file)
index 0000000..0c317cb
--- /dev/null
+++ b/target/linux/brcm63xx/patches-4.4/411-MIPS-BCM63XX-Register-SPI-flash-if-present.patch
@@ -0,0 +1,135 @@
+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 +232,17 @@ 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;
++              }
++
++              if (BCMCPU_IS_6358() || BCMCPU_IS_6368())
++                      bcm63xx_flash_data.max_transfer_len = SPI_6358_MSG_DATA_SIZE;
++
++              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)