MIPS: BCM63XX: Add flash type detection
On BCM6358 and BCM6368 the attached flash type is exposed through a
bootstrapping register. Use it for auto detecting the flash type on
those and default to parallel flash for earlier SoCs.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Maxime Bizon <mbizon@freebox.fr>
Cc: Florian Fainelli <florian@openwrt.org>
Cc: Kevin Cernekee <cernekee@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/3954/
Reviewed-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
index 6a8df56..849fd97 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
@@ -507,6 +507,15 @@
#define GPIO_BASEMODE_6368_MASK 0x7
/* those bits must be kept as read in gpio basemode register*/
+#define GPIO_STRAPBUS_REG 0x40
+#define STRAPBUS_6358_BOOT_SEL_PARALLEL (1 << 1)
+#define STRAPBUS_6358_BOOT_SEL_SERIAL (0 << 1)
+#define STRAPBUS_6368_BOOT_SEL_MASK 0x3
+#define STRAPBUS_6368_BOOT_SEL_NAND 0
+#define STRAPBUS_6368_BOOT_SEL_SERIAL 1
+#define STRAPBUS_6368_BOOT_SEL_PARALLEL 3
+
+
/*************************************************************************
* _REG relative to RSET_ENET
*************************************************************************/