Merge tag 'arm-soc/for-4.2/soc-part2' of http://github.com/broadcom/stblinux into next/soc

Merge "changes for Broadcom SoCs":

- Dan fixes an error path in the BCM63xx SMP code

- Ray adds the relevant Kconfig selects to enable the Broadcom NAND driver on Cygnus

- Kevin provides a change to the Broadcom GISB arbiter driver to make it work with
  MIPS-based big-endian STB SoCs (this was a long-standing change that had dependencies on
  code in drivers/of/*)

- Gregory enables the use of GPIOLIB for brcmstb SoCs and bumps the number of GPIOs for
  these platforms

* tag 'arm-soc/for-4.2/soc-part2' of http://github.com/broadcom/stblinux:
  ARM: brcmstb: Add default gpio number
  ARM: brcmstb: Select ARCH_WANT_OPTIONAL_GPIOLIB
  bus: brcmstb_gisb: Honor the "big-endian" and "native-endian" DT properties
  ARM: BCM: Enable NAND support for iProc SoCs
  ARM: BCM63xx: fix an error path in bcm63xx_pmb_power_on_cpu()

arch/arm/Kconfig

@@ -1509,7 +1509,8 @@ config ARM_PSCI
 # selected platforms.
 config ARCH_NR_GPIO
 	int
-	default 1024 if ARCH_SHMOBILE || ARCH_TEGRA || ARCH_ZYNQ
+	default 1024 if ARCH_BRCMSTB || ARCH_SHMOBILE || ARCH_TEGRA || \
+		ARCH_ZYNQ
 	default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
 		SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
 	default 416 if ARCH_SUNXI

arch/arm/mach-bcm/Kconfig

@@ -19,6 +19,7 @@ config ARCH_BCM_IPROC
 	select ARCH_REQUIRE_GPIOLIB
 	select ARM_AMBA
 	select PINCTRL
+	select MTD_NAND_BRCMNAND
 	help
 	  This enables support for systems based on Broadcom IPROC architected SoCs.
 	  The IPROC complex contains one or more ARM CPUs along with common
@@ -144,6 +145,7 @@ config ARCH_BRCMSTB
 	select BRCMSTB_GISB_ARB
 	select BRCMSTB_L2_IRQ
 	select BCM7120_L2_IRQ
+	select ARCH_WANT_OPTIONAL_GPIOLIB
 	help
 	  Say Y if you intend to run the kernel on a Broadcom ARM-based STB
 	  chipset.

arch/arm/mach-bcm/bcm63xx_pmb.c

@@ -150,7 +150,7 @@ int bcm63xx_pmb_power_on_cpu(struct device_node *dn)
 	 */
 	ret = bpcm_rd(base, addr, ARM_CONTROL, &ctrl);
 	if (ret)
-		return ret;
+		goto out;
 
 	if (ctrl & CPU_RESET_N(cpu)) {
 		pr_info("PMB: CPU%d is already powered on\n", cpu);

drivers/bus/brcmstb_gisb.c

@@ -91,6 +91,7 @@ static const int gisb_offsets_bcm7445[] = {
 struct brcmstb_gisb_arb_device {
 	void __iomem	*base;
 	const int	*gisb_offsets;
+	bool		big_endian;
 	struct mutex	lock;
 	struct list_head next;
 	u32 valid_mask;
@@ -108,6 +109,9 @@ static u32 gisb_read(struct brcmstb_gisb_arb_device *gdev, int reg)
 	if (offset == -1)
 		return 1;
 
+	if (gdev->big_endian)
+		return ioread32be(gdev->base + offset);
+	else
 		return ioread32(gdev->base + offset);
 }
 
@@ -117,6 +121,10 @@ static void gisb_write(struct brcmstb_gisb_arb_device *gdev, u32 val, int reg)
 
 	if (offset == -1)
 		return;
+
+	if (gdev->big_endian)
+		iowrite32be(val, gdev->base + reg);
+	else
 		iowrite32(val, gdev->base + reg);
 }
 
@@ -296,6 +304,7 @@ static int __init brcmstb_gisb_arb_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 	gdev->gisb_offsets = of_id->data;
+	gdev->big_endian = of_device_is_big_endian(dn);
 
 	err = devm_request_irq(&pdev->dev, timeout_irq,
 				brcmstb_gisb_timeout_handler, 0, pdev->name,