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

Pull ARM SoC platform changes from Arnd Bergmann:
 "New and updated SoC support.  Among the things new for this release
  are:

   - at91: Added support for the new SAMA5D4 SoC, following the earlier
     SAMA5D3
   - bcm: Added support for BCM63XX family of DSL SoCs
   - hisi: Added support for HiP04 server-class SoC
   - meson: Initial support for the Amlogic Meson6 (aka 8726MX) platform
   - shmobile: added support for new r8a7794 (R-Car E2) automotive SoC

  Noteworthy changes to existing SoC support are:

   - imx: convert i.MX1 to device tree
   - omap: lots of power management work
   - omap: base support to enable moving to standard UART driver
   - shmobile: lots of progress for multiplatform support, still
     ongoing"

* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (171 commits)
  ARM: hisi: depend on ARCH_MULTI_V7
  CNS3xxx: Fix debug UART.
  ARM: at91: fix nommu build regression
  ARM: meson: add basic support for MesonX SoCs
  ARM: meson: debug: add debug UART for earlyprintk support
  irq: Export handle_fasteoi_irq
  ARM: mediatek: Add earlyprintk support for mt6589
  ARM: hisi: Fix platmcpm compilation when ARMv6 is selected
  ARM: debug: fix alphanumerical order on debug uarts
  ARM: at91: document Atmel SMART compatibles
  ARM: at91: add sama5d4 support to sama5_defconfig
  ARM: at91: dt: add device tree file for SAMA5D4ek board
  ARM: at91: dt: add device tree file for SAMA5D4 SoC
  ARM: at91: SAMA5D4 SoC detection code and low level routines
  ARM: at91: introduce basic SAMA5D4 support
  clk: at91: add a driver for the h32mx clock
  ARM: pxa3xx: provide specific platform_devices for all ssp ports
  ARM: pxa: ssp: provide platform_device_id for PXA3xx
  ARM: OMAP4+: Remove static iotable mappings for SRAM
  ARM: OMAP4+: Move SRAM data to DT
  ...

1 files changed, 93 insertions, 4 deletions

diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 0bf893a574f9..ebe7fdca9e83 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -97,6 +97,13 @@ static struct map_desc at91_io_desc __initdata __maybe_unused = {
 	.type		= MT_DEVICE,
 };
 
+static struct map_desc at91_alt_io_desc __initdata __maybe_unused = {
+	.virtual	= (unsigned long)AT91_ALT_VA_BASE_SYS,
+	.pfn		= __phys_to_pfn(AT91_ALT_BASE_SYS),
+	.length		= 24 * SZ_1K,
+	.type		= MT_DEVICE,
+};
+
 static void __init soc_detect(u32 dbgu_base)
 {
 	u32 cidr, socid;
@@ -159,9 +166,12 @@ static void __init soc_detect(u32 dbgu_base)
 		at91_boot_soc = at91sam9n12_soc;
 		break;
 
-	case ARCH_ID_SAMA5D3:
-		at91_soc_initdata.type = AT91_SOC_SAMA5D3;
-		at91_boot_soc = sama5d3_soc;
+	case ARCH_ID_SAMA5:
+		at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
+		if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D3) {
+			at91_soc_initdata.type = AT91_SOC_SAMA5D3;
+			at91_boot_soc = sama5d3_soc;
+		}
 		break;
 	}
 
@@ -184,7 +194,8 @@ static void __init soc_detect(u32 dbgu_base)
 	at91_soc_initdata.cidr = cidr;
 
 	/* sub version of soc */
-	at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
+	if (!at91_soc_initdata.exid)
+		at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
 
 	if (at91_soc_initdata.type == AT91_SOC_SAM9G45) {
 		switch (at91_soc_initdata.exid) {
@@ -241,6 +252,54 @@ static void __init soc_detect(u32 dbgu_base)
 	}
 }
 
+static void __init alt_soc_detect(u32 dbgu_base)
+{
+	u32 cidr, socid;
+
+	/* SoC ID */
+	cidr = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_CIDR);
+	socid = cidr & ~AT91_CIDR_VERSION;
+
+	switch (socid) {
+	case ARCH_ID_SAMA5:
+		at91_soc_initdata.exid = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
+		if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D3) {
+			at91_soc_initdata.type = AT91_SOC_SAMA5D3;
+			at91_boot_soc = sama5d3_soc;
+		} else if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D4) {
+			at91_soc_initdata.type = AT91_SOC_SAMA5D4;
+			at91_boot_soc = sama5d4_soc;
+		}
+		break;
+	}
+
+	if (!at91_soc_is_detected())
+		return;
+
+	at91_soc_initdata.cidr = cidr;
+
+	/* sub version of soc */
+	if (!at91_soc_initdata.exid)
+		at91_soc_initdata.exid = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
+
+	if (at91_soc_initdata.type == AT91_SOC_SAMA5D4) {
+		switch (at91_soc_initdata.exid) {
+		case ARCH_EXID_SAMA5D41:
+			at91_soc_initdata.subtype = AT91_SOC_SAMA5D41;
+			break;
+		case ARCH_EXID_SAMA5D42:
+			at91_soc_initdata.subtype = AT91_SOC_SAMA5D42;
+			break;
+		case ARCH_EXID_SAMA5D43:
+			at91_soc_initdata.subtype = AT91_SOC_SAMA5D43;
+			break;
+		case ARCH_EXID_SAMA5D44:
+			at91_soc_initdata.subtype = AT91_SOC_SAMA5D44;
+			break;
+		}
+	}
+}
+
 static const char *soc_name[] = {
 	[AT91_SOC_RM9200]	= "at91rm9200",
 	[AT91_SOC_SAM9260]	= "at91sam9260",
@@ -253,6 +312,7 @@ static const char *soc_name[] = {
 	[AT91_SOC_SAM9X5]	= "at91sam9x5",
 	[AT91_SOC_SAM9N12]	= "at91sam9n12",
 	[AT91_SOC_SAMA5D3]	= "sama5d3",
+	[AT91_SOC_SAMA5D4]	= "sama5d4",
 	[AT91_SOC_UNKNOWN]	= "Unknown",
 };
 
@@ -280,6 +340,10 @@ static const char *soc_subtype_name[] = {
 	[AT91_SOC_SAMA5D34]	= "sama5d34",
 	[AT91_SOC_SAMA5D35]	= "sama5d35",
 	[AT91_SOC_SAMA5D36]	= "sama5d36",
+	[AT91_SOC_SAMA5D41]	= "sama5d41",
+	[AT91_SOC_SAMA5D42]	= "sama5d42",
+	[AT91_SOC_SAMA5D43]	= "sama5d43",
+	[AT91_SOC_SAMA5D44]	= "sama5d44",
 	[AT91_SOC_SUBTYPE_NONE]	= "None",
 	[AT91_SOC_SUBTYPE_UNKNOWN] = "Unknown",
 };
@@ -342,6 +406,31 @@ void __init at91_ioremap_rstc(u32 base_addr)
 		panic("Impossible to ioremap at91_rstc_base\n");
 }
 
+void __init at91_alt_map_io(void)
+{
+	/* Map peripherals */
+	iotable_init(&at91_alt_io_desc, 1);
+
+	at91_soc_initdata.type = AT91_SOC_UNKNOWN;
+	at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_UNKNOWN;
+
+	alt_soc_detect(AT91_BASE_DBGU2);
+	if (!at91_soc_is_detected())
+		panic("AT91: Impossible to detect the SOC type");
+
+	pr_info("AT91: Detected soc type: %s\n",
+		at91_get_soc_type(&at91_soc_initdata));
+	if (at91_soc_initdata.subtype != AT91_SOC_SUBTYPE_NONE)
+		pr_info("AT91: Detected soc subtype: %s\n",
+			at91_get_soc_subtype(&at91_soc_initdata));
+
+	if (!at91_soc_is_enabled())
+		panic("AT91: Soc not enabled");
+
+	if (at91_boot_soc.map_io)
+		at91_boot_soc.map_io();
+}
+
 void __iomem *at91_matrix_base;
 EXPORT_SYMBOL_GPL(at91_matrix_base);