bcm53xx: switch to m25p80 and drop bcm53xxspiflash

For some time now m25p80 supports 32 MiB flashes and we just needed to
patch spi-nor to support JEDEC incompatible w25q128. Also by switching
to m25p80 we gain accelerated SPI flash reads.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 49260

target/linux/bcm53xx/config-4.4

@@ -215,11 +215,11 @@ CONFIG_MIGHT_HAVE_CACHE_L2X0=y
 CONFIG_MIGHT_HAVE_PCI=y
 CONFIG_MODULES_USE_ELF_REL=y
 CONFIG_MTD_BCM47XX_PARTS=y
+CONFIG_MTD_M25P80=y
 CONFIG_MTD_NAND=y
 CONFIG_MTD_NAND_BRCMNAND=y
 CONFIG_MTD_NAND_ECC=y
 # CONFIG_MTD_PHYSMAP_OF is not set
-CONFIG_MTD_SPI_BCM53XXSPIFLASH=y
 CONFIG_MTD_SPI_NOR=y
 CONFIG_MTD_SPLIT_FIRMWARE=y
 CONFIG_MTD_SPLIT_SEAMA_FW=y

target/linux/bcm53xx/patches-4.4/404-mtd-bcm53xxspiflash-new-driver-for-SPI-flahes-on-Bro.patch

@@ -1,20 +0,0 @@
---- a/drivers/mtd/spi-nor/Kconfig
-+++ b/drivers/mtd/spi-nor/Kconfig
-@@ -41,4 +41,10 @@ config SPI_NXP_SPIFI
- 	  Flash. Enable this option if you have a device with a SPIFI
- 	  controller and want to access the Flash as a mtd device.
- 
-+config MTD_SPI_BCM53XXSPIFLASH
-+	tristate "SPI-NOR flashes connected to the Broadcom ARM SoC"
-+	depends on MTD_SPI_NOR
-+	help
-+	  SPI driver for flashes used on Broadcom ARM SoCs.
-+
- endif # MTD_SPI_NOR
---- a/drivers/mtd/spi-nor/Makefile
-+++ b/drivers/mtd/spi-nor/Makefile
-@@ -1,3 +1,4 @@
- obj-$(CONFIG_MTD_SPI_NOR)	+= spi-nor.o
- obj-$(CONFIG_SPI_FSL_QUADSPI)	+= fsl-quadspi.o
-+obj-$(CONFIG_MTD_SPI_BCM53XXSPIFLASH)	+= bcm53xxspiflash.o
- obj-$(CONFIG_SPI_NXP_SPIFI)	+= nxp-spifi.o

target/linux/bcm53xx/patches-4.4/820-spi-bcm53xx-let-DT-specify-SPI-device-s-instead-hard.patch

@@ -0,0 +1,41 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Subject: [PATCH] spi: bcm53xx: let DT specify SPI device(s) instead hardcoding
+ them
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+
+--- a/drivers/spi/spi-bcm53xx.c
++++ b/drivers/spi/spi-bcm53xx.c
+@@ -275,10 +275,6 @@ static int bcm53xxspi_flash_read(struct spi_device *spi,
+  * BCMA
+  **************************************************/
+ 
+-static struct spi_board_info bcm53xx_info = {
+-	.modalias	= "bcm53xxspiflash",
+-};
+-
+ static const struct bcma_device_id bcm53xxspi_bcma_tbl[] = {
+ 	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_QSPI, BCMA_ANY_REV, BCMA_ANY_CLASS),
+ 	{},
+@@ -300,6 +296,7 @@ static int bcm53xxspi_bcma_probe(struct bcma_device *core)
+ 	master = spi_alloc_master(dev, sizeof(*b53spi));
+ 	if (!master)
+ 		return -ENOMEM;
++	master->dev.of_node = dev->of_node;
+ 
+ 	b53spi = spi_master_get_devdata(master);
+ 	b53spi->master = master;
+@@ -324,9 +321,6 @@ static int bcm53xxspi_bcma_probe(struct bcma_device *core)
+ 		return err;
+ 	}
+ 
+-	/* Broadcom SoCs (at least with the CC rev 42) use SPI for flash only */
+-	spi_new_device(master, &bcm53xx_info);
+-
+ 	return 0;
+ }
+