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

Pull ARM SoC platform changes from Olof Johansson:
 "New core SoC-specific changes.

  New platforms:
   * Introduction of a vendor, Hisilicon, and one of their SoCs with
     some random numerical product name.
   * Introduction of EFM32, embedded platform from Silicon Labs (ARMv7m,
     i.e. !MMU).
   * Marvell Berlin series of SoCs, which include the one in Chromecast.
   * MOXA platform support, ARM9-based platform used mostly in
     industrial products
   * Support for Freescale's i.MX50 SoC.

  Other work:
   * Renesas work for new platforms and drivers, and conversion over to
     more multiplatform-friendly device registration schemes.
   * SMP support for Allwinner sunxi platforms.
   * ... plus a bunch of other stuff across various platforms"

* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (201 commits)
  ARM: tegra: fix tegra_powergate_sequence_power_up() inline
  ARM: msm_defconfig: Update for multi-platform
  ARM: msm: Move MSM's DT based hardware to multi-platform support
  ARM: msm: Only build timer.c if required
  ARM: msm: Only build clock.c on proc_comm based platforms
  ARM: ux500: Enable system suspend with WFI support
  ARM: ux500: turn on PRINTK_TIME in u8500_defconfig
  ARM: shmobile: r8a7790: Fix I2C controller names
  ARM: msm: Simplify ARCH_MSM_DT config
  ARM: msm: Add support for MSM8974 SoC
  ARM: sunxi: select ARM_PSCI
  MAINTAINERS: Update Allwinner sunXi maintainer files
  ARM: sunxi: Select RESET_CONTROLLER
  ARM: imx: improve the comment of CCM lpm SW workaround
  ARM: imx: improve status check of clock gate
  ARM: imx: add necessary interface for pfd
  ARM: imx_v6_v7_defconfig: Select CONFIG_REGULATOR_PFUZE100
  ARM: imx_v6_v7_defconfig: Select MX35 and MX50 device tree support
  ARM: imx: Add cpu frequency scaling support
  ARM i.MX35: Add devicetree support.
  ...

5 files changed, 241 insertions, 14 deletions

diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index 15c09294effa..d1a12a496525 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -65,6 +65,7 @@ config ARCH_TEGRA_124_SOC
         bool "Enable support for Tegra124 family"
         select ARM_L1_CACHE_SHIFT_6
         select HAVE_ARM_ARCH_TIMER
+        select PINCTRL_TEGRA124
         help
           Support for NVIDIA Tegra T124 processor family, based on the
           ARM CortexA15MP CPU
diff --git a/arch/arm/mach-tegra/fuse.c b/arch/arm/mach-tegra/fuse.c
index 3a9c1f1c219d..c9ac23b385be 100644
--- a/arch/arm/mach-tegra/fuse.c
+++ b/arch/arm/mach-tegra/fuse.c
@@ -22,6 +22,7 @@
 #include <linux/io.h>
 #include <linux/export.h>
 #include <linux/random.h>
+#include <linux/clk.h>
 #include <linux/tegra-soc.h>
 
 #include "fuse.h"
@@ -54,6 +55,7 @@ int tegra_cpu_speedo_id;		/* only exist in Tegra30 and later */
 int tegra_soc_speedo_id;
 enum tegra_revision tegra_revision;
 
+static struct clk *fuse_clk;
 static int tegra_fuse_spare_bit;
 static void (*tegra_init_speedo_data)(void);
 
@@ -77,6 +79,22 @@ static const char *tegra_revision_name[TEGRA_REVISION_MAX] = {
         [TEGRA_REVISION_A04]     = "A04",
 };
 
+static void tegra_fuse_enable_clk(void)
+{
+        if (IS_ERR(fuse_clk))
+                fuse_clk = clk_get_sys(NULL, "fuse");
+        if (IS_ERR(fuse_clk))
+                return;
+        clk_prepare_enable(fuse_clk);
+}
+
+static void tegra_fuse_disable_clk(void)
+{
+        if (IS_ERR(fuse_clk))
+                return;
+        clk_disable_unprepare(fuse_clk);
+}
+
 u32 tegra_fuse_readl(unsigned long offset)
 {
         return tegra_apb_readl(TEGRA_FUSE_BASE + offset);
@@ -84,7 +102,15 @@ u32 tegra_fuse_readl(unsigned long offset)
 
 bool tegra_spare_fuse(int bit)
 {
-        return tegra_fuse_readl(tegra_fuse_spare_bit + bit * 4);
+        bool ret;
+
+        tegra_fuse_enable_clk();
+
+        ret = tegra_fuse_readl(tegra_fuse_spare_bit + bit * 4);
+
+        tegra_fuse_disable_clk();
+
+        return ret;
 }
 
 static enum tegra_revision tegra_get_revision(u32 id)
@@ -113,10 +139,14 @@ static void tegra_get_process_id(void)
 {
         u32 reg;
 
+        tegra_fuse_enable_clk();
+
         reg = tegra_fuse_readl(tegra_fuse_spare_bit);
         tegra_cpu_process_id = (reg >> 6) & 3;
         reg = tegra_fuse_readl(tegra_fuse_spare_bit);
         tegra_core_process_id = (reg >> 12) & 3;
+
+        tegra_fuse_disable_clk();
 }
 
 u32 tegra_read_chipid(void)
@@ -159,6 +189,15 @@ void __init tegra_init_fuse(void)
         reg |= 1 << 28;
         writel(reg, IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x48));
 
+        /*
+         * Enable FUSE clock. This needs to be hardcoded because the clock
+         * subsystem is not active during early boot.
+         */
+        reg = readl(IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x14));
+        reg |= 1 << 7;
+        writel(reg, IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x14));
+        fuse_clk = ERR_PTR(-EINVAL);
+
         reg = tegra_fuse_readl(FUSE_SKU_INFO);
         randomness[0] = reg;
         tegra_sku_id = reg & 0xFF;
diff --git a/arch/arm/mach-tegra/iomap.h b/arch/arm/mach-tegra/iomap.h
index 26b1c2ad0ceb..ee79808e93a3 100644
--- a/arch/arm/mach-tegra/iomap.h
+++ b/arch/arm/mach-tegra/iomap.h
@@ -19,6 +19,7 @@
 #ifndef __MACH_TEGRA_IOMAP_H
 #define __MACH_TEGRA_IOMAP_H
 
+#include <asm/pgtable.h>
 #include <asm/sizes.h>
 
 #define TEGRA_IRAM_BASE                 0x40000000
@@ -115,27 +116,26 @@
  * two 256MB io windows (that actually only use about 64KB
  * at the start of each).
  *
- * We will just map the first 1MB of each window (to minimize
+ * We will just map the first MMU section of each window (to minimize
  * pt entries needed) and provide a macro to transform physical
  * io addresses to an appropriate void __iomem *.
- *
  */
 
 #define IO_IRAM_PHYS    0x40000000
 #define IO_IRAM_VIRT    IOMEM(0xFE400000)
 #define IO_IRAM_SIZE    SZ_256K
 
-#define IO_CPU_PHYS     0x50040000
-#define IO_CPU_VIRT     IOMEM(0xFE000000)
+#define IO_CPU_PHYS     0x50040000
+#define IO_CPU_VIRT     IOMEM(0xFE440000)
 #define IO_CPU_SIZE     SZ_16K
 
 #define IO_PPSB_PHYS    0x60000000
 #define IO_PPSB_VIRT    IOMEM(0xFE200000)
-#define IO_PPSB_SIZE    SZ_1M
+#define IO_PPSB_SIZE    SECTION_SIZE
 
 #define IO_APB_PHYS     0x70000000
-#define IO_APB_VIRT     IOMEM(0xFE300000)
-#define IO_APB_SIZE     SZ_1M
+#define IO_APB_VIRT     IOMEM(0xFE000000)
+#define IO_APB_SIZE     SECTION_SIZE
 
 #define IO_TO_VIRT_BETWEEN(p, st, sz)   ((p) >= (st) && (p) < ((st) + (sz)))
 #define IO_TO_VIRT_XLATE(p, pst, vst)   (((p) - (pst) + (vst)))
diff --git a/arch/arm/mach-tegra/powergate.c b/arch/arm/mach-tegra/powergate.c
index f6f5b54ff95e..3d0c537d9b94 100644
--- a/arch/arm/mach-tegra/powergate.c
+++ b/arch/arm/mach-tegra/powergate.c
@@ -34,6 +34,10 @@
 #include "fuse.h"
 #include "iomap.h"
 
+#define DPD_SAMPLE              0x020
+#define  DPD_SAMPLE_ENABLE      (1 << 0)
+#define  DPD_SAMPLE_DISABLE     (0 << 0)
+
 #define PWRGATE_TOGGLE          0x30
 #define  PWRGATE_TOGGLE_START   (1 << 8)
 
@@ -41,6 +45,19 @@
 
 #define PWRGATE_STATUS          0x38
 
+#define IO_DPD_REQ              0x1b8
+#define  IO_DPD_REQ_CODE_IDLE   (0 << 30)
+#define  IO_DPD_REQ_CODE_OFF    (1 << 30)
+#define  IO_DPD_REQ_CODE_ON     (2 << 30)
+#define  IO_DPD_REQ_CODE_MASK   (3 << 30)
+
+#define IO_DPD_STATUS           0x1bc
+#define IO_DPD2_REQ             0x1c0
+#define IO_DPD2_STATUS          0x1c4
+#define SEL_DPD_TIM             0x1c8
+
+#define GPU_RG_CNTRL            0x2d4
+
 static int tegra_num_powerdomains;
 static int tegra_num_cpu_domains;
 static const u8 *tegra_cpu_domains;
@@ -59,6 +76,13 @@ static const u8 tegra114_cpu_domains[] = {
         TEGRA_POWERGATE_CPU3,
 };
 
+static const u8 tegra124_cpu_domains[] = {
+        TEGRA_POWERGATE_CPU0,
+        TEGRA_POWERGATE_CPU1,
+        TEGRA_POWERGATE_CPU2,
+        TEGRA_POWERGATE_CPU3,
+};
+
 static DEFINE_SPINLOCK(tegra_powergate_lock);
 
 static void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
@@ -109,6 +133,7 @@ int tegra_powergate_power_off(int id)
 
         return tegra_powergate_set(id, false);
 }
+EXPORT_SYMBOL(tegra_powergate_power_off);
 
 int tegra_powergate_is_powered(int id)
 {
@@ -129,12 +154,23 @@ int tegra_powergate_remove_clamping(int id)
                 return -EINVAL;
 
         /*
+         * The Tegra124 GPU has a separate register (with different semantics)
+         * to remove clamps.
+         */
+        if (tegra_chip_id == TEGRA124) {
+                if (id == TEGRA_POWERGATE_3D) {
+                        pmc_write(0, GPU_RG_CNTRL);
+                        return 0;
+                }
+        }
+
+        /*
          * Tegra 2 has a bug where PCIE and VDE clamping masks are
          * swapped relatively to the partition ids
          */
-        if (id ==  TEGRA_POWERGATE_VDEC)
+        if (id == TEGRA_POWERGATE_VDEC)
                 mask = (1 << TEGRA_POWERGATE_PCIE);
-        else if (id == TEGRA_POWERGATE_PCIE)
+        else if (id == TEGRA_POWERGATE_PCIE)
                 mask = (1 << TEGRA_POWERGATE_VDEC);
         else
                 mask = (1 << id);
@@ -143,6 +179,7 @@ int tegra_powergate_remove_clamping(int id)
 
         return 0;
 }
+EXPORT_SYMBOL(tegra_powergate_remove_clamping);
 
 /* Must be called with clk disabled, and returns with clk enabled */
 int tegra_powergate_sequence_power_up(int id, struct clk *clk,
@@ -204,6 +241,11 @@ int __init tegra_powergate_init(void)
                 tegra_num_cpu_domains = 4;
                 tegra_cpu_domains = tegra114_cpu_domains;
                 break;
+        case TEGRA124:
+                tegra_num_powerdomains = 25;
+                tegra_num_cpu_domains = 4;
+                tegra_cpu_domains = tegra124_cpu_domains;
+                break;
         default:
                 /* Unknown Tegra variant. Disable powergating */
                 tegra_num_powerdomains = 0;
@@ -245,12 +287,36 @@ static const char * const powergate_name_t30[] = {
 };
 
 static const char * const powergate_name_t114[] = {
-        [TEGRA_POWERGATE_CPU]   = "cpu0",
+        [TEGRA_POWERGATE_CPU]   = "crail",
+        [TEGRA_POWERGATE_3D]    = "3d",
+        [TEGRA_POWERGATE_VENC]  = "venc",
+        [TEGRA_POWERGATE_VDEC]  = "vdec",
+        [TEGRA_POWERGATE_MPE]   = "mpe",
+        [TEGRA_POWERGATE_HEG]   = "heg",
+        [TEGRA_POWERGATE_CPU1]  = "cpu1",
+        [TEGRA_POWERGATE_CPU2]  = "cpu2",
+        [TEGRA_POWERGATE_CPU3]  = "cpu3",
+        [TEGRA_POWERGATE_CELP]  = "celp",
+        [TEGRA_POWERGATE_CPU0]  = "cpu0",
+        [TEGRA_POWERGATE_C0NC]  = "c0nc",
+        [TEGRA_POWERGATE_C1NC]  = "c1nc",
+        [TEGRA_POWERGATE_DIS]   = "dis",
+        [TEGRA_POWERGATE_DISB]  = "disb",
+        [TEGRA_POWERGATE_XUSBA] = "xusba",
+        [TEGRA_POWERGATE_XUSBB] = "xusbb",
+        [TEGRA_POWERGATE_XUSBC] = "xusbc",
+};
+
+static const char * const powergate_name_t124[] = {
+        [TEGRA_POWERGATE_CPU]   = "crail",
         [TEGRA_POWERGATE_3D]    = "3d",
         [TEGRA_POWERGATE_VENC]  = "venc",
+        [TEGRA_POWERGATE_PCIE]  = "pcie",
         [TEGRA_POWERGATE_VDEC]  = "vdec",
+        [TEGRA_POWERGATE_L2]    = "l2",
         [TEGRA_POWERGATE_MPE]   = "mpe",
         [TEGRA_POWERGATE_HEG]   = "heg",
+        [TEGRA_POWERGATE_SATA]  = "sata",
         [TEGRA_POWERGATE_CPU1]  = "cpu1",
         [TEGRA_POWERGATE_CPU2]  = "cpu2",
         [TEGRA_POWERGATE_CPU3]  = "cpu3",
@@ -258,11 +324,14 @@ static const char * const powergate_name_t114[] = {
         [TEGRA_POWERGATE_CPU0]  = "cpu0",
         [TEGRA_POWERGATE_C0NC]  = "c0nc",
         [TEGRA_POWERGATE_C1NC]  = "c1nc",
+        [TEGRA_POWERGATE_SOR]   = "sor",
         [TEGRA_POWERGATE_DIS]   = "dis",
         [TEGRA_POWERGATE_DISB]  = "disb",
         [TEGRA_POWERGATE_XUSBA] = "xusba",
         [TEGRA_POWERGATE_XUSBB] = "xusbb",
         [TEGRA_POWERGATE_XUSBC] = "xusbc",
+        [TEGRA_POWERGATE_VIC]   = "vic",
+        [TEGRA_POWERGATE_IRAM]  = "iram",
 };
 
 static int powergate_show(struct seq_file *s, void *data)
@@ -309,6 +378,9 @@ int __init tegra_powergate_debugfs_init(void)
         case TEGRA114:
                 powergate_name = powergate_name_t114;
                 break;
+        case TEGRA124:
+                powergate_name = powergate_name_t124;
+                break;
         }
 
         if (powergate_name) {
@@ -322,3 +394,120 @@ int __init tegra_powergate_debugfs_init(void)
 }
 
 #endif
+
+static int tegra_io_rail_prepare(int id, unsigned long *request,
+                                 unsigned long *status, unsigned int *bit)
+{
+        unsigned long rate, value;
+        struct clk *clk;
+
+        *bit = id % 32;
+
+        /*
+         * There are two sets of 30 bits to select IO rails, but bits 30 and
+         * 31 are control bits rather than IO rail selection bits.
+         */
+        if (id > 63 || *bit == 30 || *bit == 31)
+                return -EINVAL;
+
+        if (id < 32) {
+                *status = IO_DPD_STATUS;
+                *request = IO_DPD_REQ;
+        } else {
+                *status = IO_DPD2_STATUS;
+                *request = IO_DPD2_REQ;
+        }
+
+        clk = clk_get_sys(NULL, "pclk");
+        if (IS_ERR(clk))
+                return PTR_ERR(clk);
+
+        rate = clk_get_rate(clk);
+        clk_put(clk);
+
+        pmc_write(DPD_SAMPLE_ENABLE, DPD_SAMPLE);
+
+        /* must be at least 200 ns, in APB (PCLK) clock cycles */
+        value = DIV_ROUND_UP(1000000000, rate);
+        value = DIV_ROUND_UP(200, value);
+        pmc_write(value, SEL_DPD_TIM);
+
+        return 0;
+}
+
+static int tegra_io_rail_poll(unsigned long offset, unsigned long mask,
+                              unsigned long val, unsigned long timeout)
+{
+        unsigned long value;
+
+        timeout = jiffies + msecs_to_jiffies(timeout);
+
+        while (time_after(timeout, jiffies)) {
+                value = pmc_read(offset);
+                if ((value & mask) == val)
+                        return 0;
+
+                usleep_range(250, 1000);
+        }
+
+        return -ETIMEDOUT;
+}
+
+static void tegra_io_rail_unprepare(void)
+{
+        pmc_write(DPD_SAMPLE_DISABLE, DPD_SAMPLE);
+}
+
+int tegra_io_rail_power_on(int id)
+{
+        unsigned long request, status, value;
+        unsigned int bit, mask;
+        int err;
+
+        err = tegra_io_rail_prepare(id, &request, &status, &bit);
+        if (err < 0)
+                return err;
+
+        mask = 1 << bit;
+
+        value = pmc_read(request);
+        value |= mask;
+        value &= ~IO_DPD_REQ_CODE_MASK;
+        value |= IO_DPD_REQ_CODE_OFF;
+        pmc_write(value, request);
+
+        err = tegra_io_rail_poll(status, mask, 0, 250);
+        if (err < 0)
+                return err;
+
+        tegra_io_rail_unprepare();
+
+        return 0;
+}
+
+int tegra_io_rail_power_off(int id)
+{
+        unsigned long request, status, value;
+        unsigned int bit, mask;
+        int err;
+
+        err = tegra_io_rail_prepare(id, &request, &status, &bit);
+        if (err < 0)
+                return err;
+
+        mask = 1 << bit;
+
+        value = pmc_read(request);
+        value |= mask;
+        value &= ~IO_DPD_REQ_CODE_MASK;
+        value |= IO_DPD_REQ_CODE_ON;
+        pmc_write(value, request);
+
+        err = tegra_io_rail_poll(status, mask, mask, 250);
+        if (err < 0)
+                return err;
+
+        tegra_io_rail_unprepare();
+
+        return 0;
+}
diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c
index 73368176c6e8..ea14d380fc0c 100644
--- a/arch/arm/mach-tegra/tegra.c
+++ b/arch/arm/mach-tegra/tegra.c
@@ -60,15 +60,13 @@
  * kernel is loaded. The data is declared here rather than debug-macro.S so
  * that multiple inclusions of debug-macro.S point at the same data.
  */
-u32 tegra_uart_config[4] = {
+u32 tegra_uart_config[3] = {
         /* Debug UART initialization required */
         1,
         /* Debug UART physical address */
         0,
         /* Debug UART virtual address */
         0,
-        /* Scratch space for debug macro */
-        0,
 };
 
 static void __init tegra_init_cache(void)