Merge tag 'samsung-fixes' of http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes

Samsung fixes for 3.15 from Kukjin Kim:

- Remove g2d_pd and mau_pd nodes on exynos5420.
  Since the power domains are linked to the CMU blocks,
  kernel panic happens during access clocks when the
  power domains are disabled. Now this is a best solution.
- Enable HS-I2C on exynos5 by default
  MMC partition cannot be mounted for RFS without the
  enabling HS-I2C because regulators for MMC power are
  connected to HS-I2C bus.
- Disable MDMA1 node on exynos5420
  When MDMA1 runs in secure mode it makes kernel fault,
  so need to disalbe it on exynos5420 by default instead
  of each board.
- Fix the secondary CPU boot for exynos4212

* tag 'samsung-fixes' of http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: dts: Remove g2d_pd node for exynos5420
  ARM: dts: Remove mau_pd node for exynos5420
  ARM: exynos_defconfig: enable HS-I2C to fix for mmc partition mount
  ARM: dts: disable MDMA1 node for exynos5420
  ARM: EXYNOS: fix the secondary CPU boot of exynos4212

Signed-off-by: Olof Johansson <olof@lixom.net>

4 files changed, 22 insertions, 24 deletions

diff --git a/arch/arm/boot/dts/exynos5420-arndale-octa.dts b/arch/arm/boot/dts/exynos5420-arndale-octa.dts
index 80a3bf4c5986..896a2a6619e0 100644
--- a/arch/arm/boot/dts/exynos5420-arndale-octa.dts
+++ b/arch/arm/boot/dts/exynos5420-arndale-octa.dts
@@ -364,16 +364,4 @@
                         gpio-key,wakeup;
                 };
         };
-
-        amba {
-                mdma1: mdma@11C10000 {
-                        /*
-                         * MDMA1 can support both secure and non-secure
-                         * AXI transactions. When this is enabled in the kernel
-                         * for boards that run in secure mode, we are getting
-                         * imprecise external aborts causing the kernel to oops.
-                         */
-                        status = "disabled";
-                };
-        };
 };
diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index c3a9a66c5767..418f2506aaf0 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -219,16 +219,6 @@
                 reg = <0x100440C0 0x20>;
         };
 
-        mau_pd: power-domain@100440E0 {
-                compatible = "samsung,exynos4210-pd";
-                reg = <0x100440E0 0x20>;
-        };
-
-        g2d_pd: power-domain@10044100 {
-                compatible = "samsung,exynos4210-pd";
-                reg = <0x10044100 0x20>;
-        };
-
         msc_pd: power-domain@10044120 {
                 compatible = "samsung,exynos4210-pd";
                 reg = <0x10044120 0x20>;
@@ -336,6 +326,13 @@
                         #dma-cells = <1>;
                         #dma-channels = <8>;
                         #dma-requests = <1>;
+                        /*
+                         * MDMA1 can support both secure and non-secure
+                         * AXI transactions. When this is enabled in the kernel
+                         * for boards that run in secure mode, we are getting
+                         * imprecise external aborts causing the kernel to oops.
+                         */
+                        status = "disabled";
                 };
         };
 
@@ -730,6 +727,5 @@
                 interrupts = <0 112 0>;
                 clocks = <&clock 471>;
                 clock-names = "secss";
-                samsung,power-domain = <&g2d_pd>;
         };
 };
diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
index 4ce7b70ea901..e07a227ec0db 100644
--- a/arch/arm/configs/exynos_defconfig
+++ b/arch/arm/configs/exynos_defconfig
@@ -65,6 +65,7 @@ CONFIG_TCG_TIS_I2C_INFINEON=y
 CONFIG_I2C=y
 CONFIG_I2C_MUX=y
 CONFIG_I2C_ARB_GPIO_CHALLENGE=y
+CONFIG_I2C_EXYNOS5=y
 CONFIG_I2C_S3C2410=y
 CONFIG_DEBUG_GPIO=y
 # CONFIG_HWMON is not set
diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c
index 932129ef26c6..aa01c4222b40 100644
--- a/arch/arm/mach-exynos/firmware.c
+++ b/arch/arm/mach-exynos/firmware.c
@@ -18,6 +18,8 @@
 
 #include <mach/map.h>
 
+#include <plat/cpu.h>
+
 #include "smc.h"
 
 static int exynos_do_idle(void)
@@ -28,13 +30,24 @@ static int exynos_do_idle(void)
 
 static int exynos_cpu_boot(int cpu)
 {
+        /*
+         * The second parameter of SMC_CMD_CPU1BOOT command means CPU id.
+         * But, Exynos4212 has only one secondary CPU so second parameter
+         * isn't used for informing secure firmware about CPU id.
+         */
+        if (soc_is_exynos4212())
+                cpu = 0;
+
         exynos_smc(SMC_CMD_CPU1BOOT, cpu, 0, 0);
         return 0;
 }
 
 static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr)
 {
-        void __iomem *boot_reg = S5P_VA_SYSRAM_NS + 0x1c + 4*cpu;
+        void __iomem *boot_reg = S5P_VA_SYSRAM_NS + 0x1c;
+
+        if (!soc_is_exynos4212())
+                boot_reg += 4*cpu;
 
         __raw_writel(boot_addr, boot_reg);
         return 0;