Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform updates from Arnd Bergmann:
 "In the SoC branch we normally collect classic arch/arm/mach-*
  contents, i.e. C code changes for SoC platforms. This release cycle
  the diffstat is quite nice, in that we're removing 3x the amount of
  code that's being added.

  The main reason for this is that there's a removal of camera drivers
  for Freescale i.MX chips (driver was removed so the device
  registration isn't needed any more). There's also removal of display
  initialization code for OMAP that is no longer needed.

  The rest are mostly minor tweaks and cleanups; constification on
  Samsung platforms, cleanup of ux500 platform data, purge of other
  unused platform data/device seutp on i.MX and other good stuff.

  New SoC support this cycle is for two Allwinner platforms, H2+ and
  V3s"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (55 commits)
  ARM: ux500: remove deleted file from Makefile
  ARM: ep93xx: Disable TS-72xx watchdog before uncompressing
  ARM: ux500: cut some platform data
  MAINTAINERS: Update for the current location of the bcm2835 tree.
  ARM: davinci: remove BUG_ON() from da850_register_sata()
  ARM: davinci: da850: model the SATA refclk
  ARM: davinci: da850: add con_id for the SATA clock
  ARM: davinci: da8xx-dt: add OF_DEV_AUXDATA entry for SATA
  arm: mvebu: support for SMP on 98DX3336 SoC
  dt-bindings: video: exynos7-decon: Remove obsolete samsung,power-domain property
  soc: dove: constify reset_control_ops structures
  ARM: mv78xx0: fix possible PCI buffer overflow
  MAINTAINERS: transfer maintainership for the EZX platform
  ARM: shmobile: rcar-gen2: Add more register documentation
  ARM: tegra: paz00: Fix __initdata placement
  ARM: OMAP: clock: Remove unused mpurate cmdline option
  ARM: davinci: add skeleton for pdata-quirks
  arm: sunxi: add support for V3s SoC
  ARM: OMAP2+: omap_hwmod: Add support for earlycon
  arm: hisi: drop extern hip01_cpu_die
  ...

5 files changed, 54 insertions, 61 deletions

diff --git a/arch/arm/mach-shmobile/platsmp-apmu.c b/arch/arm/mach-shmobile/platsmp-apmu.c
index 0c6bb458b7a4..e19266844e16 100644
--- a/arch/arm/mach-shmobile/platsmp-apmu.c
+++ b/arch/arm/mach-shmobile/platsmp-apmu.c
@@ -31,9 +31,21 @@ static struct {
 	int bit;
 } apmu_cpus[NR_CPUS];
 
-#define WUPCR_OFFS 0x10
-#define PSTR_OFFS 0x40
-#define CPUNCR_OFFS(n) (0x100 + (0x10 * (n)))
+#define WUPCR_OFFS	 0x10		/* Wake Up Control Register */
+#define PSTR_OFFS	 0x40		/* Power Status Register */
+#define CPUNCR_OFFS(n)	(0x100 + (0x10 * (n)))
+					/* CPUn Power Status Control Register */
+#define DBGRCR_OFFS	0x180		/* Debug Resource Reset Control Reg. */
+
+/* Power Status Register */
+#define CPUNST(r, n)	(((r) >> (n * 4)) & 3)	/* CPUn Status Bit */
+#define CPUST_RUN	0		/* Run Mode */
+#define CPUST_STANDBY	3		/* CoreStandby Mode */
+
+/* Debug Resource Reset Control Register */
+#define DBGCPUREN	BIT(24)		/* CPU Other Reset Request Enable */
+#define DBGCPUNREN(n)	BIT((n) + 20)	/* CPUn Reset Request Enable */
+#define DBGCPUPREN	BIT(19)		/* CPU Peripheral Reset Req. Enable */
 
 static int __maybe_unused apmu_power_on(void __iomem *p, int bit)
 {
@@ -59,7 +71,7 @@ static int __maybe_unused apmu_power_off_poll(void __iomem *p, int bit)
 	int k;
 
 	for (k = 0; k < 1000; k++) {
-		if (((readl_relaxed(p + PSTR_OFFS) >> (bit * 4)) & 0x03) == 3)
+		if (CPUNST(readl_relaxed(p + PSTR_OFFS), bit) == CPUST_STANDBY)
 			return 1;
 
 		mdelay(1);
@@ -78,6 +90,8 @@ static int __maybe_unused apmu_wrap(int cpu, int (*fn)(void __iomem *p, int cpu)
 #ifdef CONFIG_SMP
 static void apmu_init_cpu(struct resource *res, int cpu, int bit)
 {
+	u32 x;
+
 	if ((cpu >= ARRAY_SIZE(apmu_cpus)) || apmu_cpus[cpu].iomem)
 		return;
 
@@ -85,6 +99,11 @@ static void apmu_init_cpu(struct resource *res, int cpu, int bit)
 	apmu_cpus[cpu].bit = bit;
 
 	pr_debug("apmu ioremap %d %d %pr\n", cpu, bit, res);
+
+	/* Setup for debug mode */
+	x = readl(apmu_cpus[cpu].iomem + DBGRCR_OFFS);
+	x |= DBGCPUREN | DBGCPUNREN(bit) | DBGCPUPREN;
+	writel(x, apmu_cpus[cpu].iomem + DBGRCR_OFFS);
 }
 
 static void apmu_parse_cfg(void (*fn)(struct resource *res, int cpu, int bit),
@@ -197,21 +216,9 @@ static void __init shmobile_smp_apmu_prepare_cpus_dt(unsigned int max_cpus)
 	rcar_gen2_pm_init();
 }
 
-static int shmobile_smp_apmu_boot_secondary_md21(unsigned int cpu,
-						 struct task_struct *idle)
-{
-	/* Error out when hardware debug mode is enabled */
-	if (rcar_gen2_read_mode_pins() & BIT(21)) {
-		pr_warn("Unable to boot CPU%u when MD21 is set\n", cpu);
-		return -ENOTSUPP;
-	}
-
-	return shmobile_smp_apmu_boot_secondary(cpu, idle);
-}
-
 static struct smp_operations apmu_smp_ops __initdata = {
 	.smp_prepare_cpus	= shmobile_smp_apmu_prepare_cpus_dt,
-	.smp_boot_secondary	= shmobile_smp_apmu_boot_secondary_md21,
+	.smp_boot_secondary	= shmobile_smp_apmu_boot_secondary,
 #ifdef CONFIG_HOTPLUG_CPU
 	.cpu_can_disable	= shmobile_smp_cpu_can_disable,
 	.cpu_die		= shmobile_smp_apmu_cpu_die,
diff --git a/arch/arm/mach-shmobile/pm-rcar-gen2.c b/arch/arm/mach-shmobile/pm-rcar-gen2.c
index dd9ac366868f..0178da7ace82 100644
--- a/arch/arm/mach-shmobile/pm-rcar-gen2.c
+++ b/arch/arm/mach-shmobile/pm-rcar-gen2.c
@@ -20,14 +20,30 @@
 
 /* RST */
 #define RST		0xe6160000
-#define CA15BAR		0x0020
-#define CA7BAR		0x0030
-#define CA15RESCNT	0x0040
-#define CA7RESCNT	0x0044
+
+#define CA15BAR		0x0020		/* CA15 Boot Address Register */
+#define CA7BAR		0x0030		/* CA7 Boot Address Register */
+#define CA15RESCNT	0x0040		/* CA15 Reset Control Register */
+#define CA7RESCNT	0x0044		/* CA7 Reset Control Register */
+
+/* SYS Boot Address Register */
+#define SBAR_BAREN	BIT(4)		/* SBAR is valid */
+
+/* Reset Control Registers */
+#define CA15RESCNT_CODE	0xa5a50000
+#define CA15RESCNT_CPUS	0xf		/* CPU0-3 */
+#define CA7RESCNT_CODE	0x5a5a0000
+#define CA7RESCNT_CPUS	0xf		/* CPU0-3 */
+
 
 /* On-chip RAM */
 #define ICRAM1		0xe63c0000	/* Inter Connect RAM1 (4 KiB) */
 
+static inline u32 phys_to_sbar(phys_addr_t addr)
+{
+	return (addr >> 8) & 0xfffffc00;
+}
+
 /* SYSC */
 #define SYSCIER 0x0c
 #define SYSCIMR 0x10
@@ -82,22 +98,24 @@ void __init rcar_gen2_pm_init(void)
 
 	/* setup reset vectors */
 	p = ioremap_nocache(RST, 0x63);
-	bar = (boot_vector_addr >> 8) & 0xfffffc00;
+	bar = phys_to_sbar(boot_vector_addr);
 	if (has_a15) {
 		writel_relaxed(bar, p + CA15BAR);
-		writel_relaxed(bar | 0x10, p + CA15BAR);
+		writel_relaxed(bar | SBAR_BAREN, p + CA15BAR);
 
 		/* de-assert reset for CA15 CPUs */
-		writel_relaxed((readl_relaxed(p + CA15RESCNT) & ~0x0f) |
-				0xa5a50000, p + CA15RESCNT);
+		writel_relaxed((readl_relaxed(p + CA15RESCNT) &
+				~CA15RESCNT_CPUS) | CA15RESCNT_CODE,
+			       p + CA15RESCNT);
 	}
 	if (has_a7) {
 		writel_relaxed(bar, p + CA7BAR);
-		writel_relaxed(bar | 0x10, p + CA7BAR);
+		writel_relaxed(bar | SBAR_BAREN, p + CA7BAR);
 
 		/* de-assert reset for CA7 CPUs */
-		writel_relaxed((readl_relaxed(p + CA7RESCNT) & ~0x0f) |
-				0x5a5a0000, p + CA7RESCNT);
+		writel_relaxed((readl_relaxed(p + CA7RESCNT) &
+				~CA7RESCNT_CPUS) | CA7RESCNT_CODE,
+			       p + CA7RESCNT);
 	}
 	iounmap(p);
 
diff --git a/arch/arm/mach-shmobile/rcar-gen2.h b/arch/arm/mach-shmobile/rcar-gen2.h
index 8a66b4aae035..6792e249cf56 100644
--- a/arch/arm/mach-shmobile/rcar-gen2.h
+++ b/arch/arm/mach-shmobile/rcar-gen2.h
@@ -2,8 +2,6 @@
 #define __ASM_RCAR_GEN2_H__
 
 void rcar_gen2_timer_init(void);
-#define MD(nr) BIT(nr)
-u32 rcar_gen2_read_mode_pins(void);
 void rcar_gen2_reserve(void);
 void rcar_gen2_pm_init(void);
 
diff --git a/arch/arm/mach-shmobile/setup-rcar-gen2.c b/arch/arm/mach-shmobile/setup-rcar-gen2.c
index ac63fa407b64..52d466b75973 100644
--- a/arch/arm/mach-shmobile/setup-rcar-gen2.c
+++ b/arch/arm/mach-shmobile/setup-rcar-gen2.c
@@ -29,24 +29,6 @@
 #include "common.h"
 #include "rcar-gen2.h"
 
-#define MODEMR 0xe6160060
-
-u32 rcar_gen2_read_mode_pins(void)
-{
-	static u32 mode;
-	static bool mode_valid;
-
-	if (!mode_valid) {
-		void __iomem *modemr = ioremap_nocache(MODEMR, 4);
-		BUG_ON(!modemr);
-		mode = ioread32(modemr);
-		iounmap(modemr);
-		mode_valid = true;
-	}
-
-	return mode;
-}
-
 static unsigned int __init get_extal_freq(void)
 {
 	struct device_node *cpg, *extal;
diff --git a/arch/arm/mach-shmobile/smp-r8a7791.c b/arch/arm/mach-shmobile/smp-r8a7791.c
index 2d6417af73b5..2948c22cfc53 100644
--- a/arch/arm/mach-shmobile/smp-r8a7791.c
+++ b/arch/arm/mach-shmobile/smp-r8a7791.c
@@ -42,21 +42,9 @@ static void __init r8a7791_smp_prepare_cpus(unsigned int max_cpus)
 	rcar_gen2_pm_init();
 }
 
-static int r8a7791_smp_boot_secondary(unsigned int cpu,
-				      struct task_struct *idle)
-{
-	/* Error out when hardware debug mode is enabled */
-	if (rcar_gen2_read_mode_pins() & BIT(21)) {
-		pr_warn("Unable to boot CPU%u when MD21 is set\n", cpu);
-		return -ENOTSUPP;
-	}
-
-	return shmobile_smp_apmu_boot_secondary(cpu, idle);
-}
-
 const struct smp_operations r8a7791_smp_ops __initconst = {
 	.smp_prepare_cpus	= r8a7791_smp_prepare_cpus,
-	.smp_boot_secondary	= r8a7791_smp_boot_secondary,
+	.smp_boot_secondary	= shmobile_smp_apmu_boot_secondary,
 #ifdef CONFIG_HOTPLUG_CPU
 	.cpu_can_disable	= shmobile_smp_cpu_can_disable,
 	.cpu_die		= shmobile_smp_apmu_cpu_die,