Merge tag 'omap-for-v3.20/fixes-not-urgent-pt1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/fixes-non-critical

Merge "omap non-urgent fixes for v3.20" from Tony Lindgren:

Non-urgent fixes for omap variant dm816x that has been in a sorry
broken half merged state for a few years now. This gets us to the
point where we can boot it properly once the related SoC data is
added. Note that we've already made dm816x device tree only by
removing the known broken board file.

* tag 'omap-for-v3.20/fixes-not-urgent-pt1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Disable omap3 PM init for ti81xx
  ARM: OMAP2+: Fix reboot for 81xx
  ARM: OMAP2+: Fix dm814 and dm816 for clocks and timer init
  ARM: OMAP2+: Fix ti81xx class type
  ARM: OMAP2+: Fix ti81xx devtype
  ARM: OMAP2+: Fix error handling for omap2_clk_enable_init_clocks

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

11 files changed, 84 insertions, 9 deletions

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 5d27dfdef66b..3a6463f88ea2 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -58,6 +58,7 @@ AFLAGS_sram34xx.o			:=-Wa,-march=armv7-a
 # Restart code (OMAP4/5 currently in omap4-common.c)
 obj-$(CONFIG_SOC_OMAP2420)              += omap2-restart.o
 obj-$(CONFIG_SOC_OMAP2430)              += omap2-restart.o
+obj-$(CONFIG_SOC_TI81XX)                += ti81xx-restart.o
 obj-$(CONFIG_SOC_AM33XX)                += am33xx-restart.o
 obj-$(CONFIG_SOC_AM43XX)                += omap4-restart.o
 obj-$(CONFIG_ARCH_OMAP3)                += omap3-restart.o
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index 6ad5b4dbd33e..4ae4ccebced2 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -620,6 +620,9 @@ void omap2_clk_enable_init_clocks(const char **clk_names, u8 num_clocks)
 
         for (i = 0; i < num_clocks; i++) {
                 init_clk = clk_get(NULL, clk_names[i]);
+                if (WARN(IS_ERR(init_clk), "could not find init clock %s\n",
+                                clk_names[i]))
+                        continue;
                 clk_prepare_enable(init_clk);
         }
 }
diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index 377eea849e7b..65b4371b3361 100644
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -110,7 +110,8 @@ void omap3630_init_early(void);
 void omap3_init_early(void);    /* Do not use this one */
 void am33xx_init_early(void);
 void am35xx_init_early(void);
-void ti81xx_init_early(void);
+void ti814x_init_early(void);
+void ti816x_init_early(void);
 void am33xx_init_early(void);
 void am43xx_init_early(void);
 void am43xx_init_late(void);
@@ -163,6 +164,14 @@ static inline void omap3xxx_restart(enum reboot_mode mode, const char *cmd)
 }
 #endif
 
+#ifdef CONFIG_SOC_TI81XX
+void ti81xx_restart(enum reboot_mode mode, const char *cmd);
+#else
+static inline void ti81xx_restart(enum reboot_mode mode, const char *cmd)
+{
+}
+#endif
+
 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \
         defined(CONFIG_SOC_DRA7XX) || defined(CONFIG_SOC_AM43XX)
 void omap44xx_restart(enum reboot_mode mode, const char *cmd);
diff --git a/arch/arm/mach-omap2/control.h b/arch/arm/mach-omap2/control.h
index a3c013345c45..0fba6d1130a9 100644
--- a/arch/arm/mach-omap2/control.h
+++ b/arch/arm/mach-omap2/control.h
@@ -53,6 +53,7 @@
 #define OMAP343X_CONTROL_GENERAL_WKUP   0xa60
 
 /* TI81XX spefic control submodules */
+#define TI81XX_CONTROL_DEVBOOT          0x040
 #define TI81XX_CONTROL_DEVCONF          0x600
 
 /* Control register offsets - read/write with omap_ctrl_{read,write}{bwl}() */
@@ -246,6 +247,9 @@
 #define OMAP3_PADCONF_SAD2D_MSTANDBY   0x250
 #define OMAP3_PADCONF_SAD2D_IDLEACK    0x254
 
+/* TI81XX CONTROL_DEVBOOT register offsets */
+#define TI81XX_CONTROL_STATUS           (TI81XX_CONTROL_DEVBOOT + 0x000)
+
 /* TI81XX CONTROL_DEVCONF register offsets */
 #define TI81XX_CONTROL_DEVICE_ID        (TI81XX_CONTROL_DEVCONF + 0x000)
 
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index c25feba05818..2a2f4d56e4c8 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -56,6 +56,8 @@ int omap_type(void)
 
         if (cpu_is_omap24xx()) {
                 val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS);
+        } else if (cpu_is_ti81xx()) {
+                val = omap_ctrl_readl(TI81XX_CONTROL_STATUS);
         } else if (soc_is_am33xx() || soc_is_am43xx()) {
                 val = omap_ctrl_readl(AM33XX_CONTROL_STATUS);
         } else if (cpu_is_omap34xx()) {
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index a1bd6affb508..e4a5630149e1 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -492,9 +492,28 @@ void __init am35xx_init_early(void)
                 omap_clk_soc_init = am35xx_dt_clk_init;
 }
 
-void __init ti81xx_init_early(void)
+void __init ti814x_init_early(void)
 {
-        omap2_set_globals_tap(OMAP343X_CLASS,
+        omap2_set_globals_tap(TI814X_CLASS,
+                              OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE));
+        omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(TI81XX_CTRL_BASE),
+                                  NULL);
+        omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE));
+        omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE), NULL);
+        omap3xxx_check_revision();
+        ti81xx_check_features();
+        omap3xxx_voltagedomains_init();
+        omap3xxx_powerdomains_init();
+        omap3xxx_clockdomains_init();
+        omap3xxx_hwmod_init();
+        omap_hwmod_init_postsetup();
+        if (of_have_populated_dt())
+                omap_clk_soc_init = ti81xx_dt_clk_init;
+}
+
+void __init ti816x_init_early(void)
+{
+        omap2_set_globals_tap(TI816X_CLASS,
                               OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE));
         omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(TI81XX_CTRL_BASE),
                                   NULL);
@@ -509,8 +528,6 @@ void __init ti81xx_init_early(void)
         omap_hwmod_init_postsetup();
         if (of_have_populated_dt())
                 omap_clk_soc_init = ti81xx_dt_clk_init;
-        else
-                omap_clk_soc_init = omap3xxx_clk_init;
 }
 
 void __init omap3_init_late(void)
@@ -551,7 +568,6 @@ void __init am35xx_init_late(void)
 void __init ti81xx_init_late(void)
 {
         omap_common_late_init();
-        omap3_pm_init();
         omap2_clk_enable_autoidle_all();
 }
 #endif
diff --git a/arch/arm/mach-omap2/powerdomains3xxx_data.c b/arch/arm/mach-omap2/powerdomains3xxx_data.c
index 328c1037cb60..70bc7066a4c2 100644
--- a/arch/arm/mach-omap2/powerdomains3xxx_data.c
+++ b/arch/arm/mach-omap2/powerdomains3xxx_data.c
@@ -464,7 +464,7 @@ void __init omap3xxx_powerdomains_init(void)
 {
         unsigned int rev;
 
-        if (!cpu_is_omap34xx())
+        if (!cpu_is_omap34xx() && !cpu_is_ti81xx())
                 return;
 
         pwrdm_register_platform_funcs(&omap3_pwrdm_operations);
diff --git a/arch/arm/mach-omap2/prm_common.c b/arch/arm/mach-omap2/prm_common.c
index 779940cb6e56..b6587854bca5 100644
--- a/arch/arm/mach-omap2/prm_common.c
+++ b/arch/arm/mach-omap2/prm_common.c
@@ -571,6 +571,10 @@ static const struct of_device_id omap_prcm_dt_match_table[] = {
         { .compatible = "ti,am3-scrm" },
         { .compatible = "ti,am4-prcm" },
         { .compatible = "ti,am4-scrm" },
+        { .compatible = "ti,dm814-prcm" },
+        { .compatible = "ti,dm814-scrm" },
+        { .compatible = "ti,dm816-prcm" },
+        { .compatible = "ti,dm816-scrm" },
         { .compatible = "ti,omap2-prcm" },
         { .compatible = "ti,omap2-scrm" },
         { .compatible = "ti,omap3-prm" },
diff --git a/arch/arm/mach-omap2/soc.h b/arch/arm/mach-omap2/soc.h
index c1a3b4416311..f97654d11ea5 100644
--- a/arch/arm/mach-omap2/soc.h
+++ b/arch/arm/mach-omap2/soc.h
@@ -423,13 +423,13 @@ IS_OMAP_TYPE(3430, 0x3430)
 #define OMAP3630_REV_ES1_1      (OMAP363X_CLASS | (0x1 << 8))
 #define OMAP3630_REV_ES1_2      (OMAP363X_CLASS | (0x2 << 8))
 
-#define TI816X_CLASS            0x81600034
+#define TI816X_CLASS            0x81600081
 #define TI8168_REV_ES1_0        TI816X_CLASS
 #define TI8168_REV_ES1_1        (TI816X_CLASS | (0x1 << 8))
 #define TI8168_REV_ES2_0        (TI816X_CLASS | (0x2 << 8))
 #define TI8168_REV_ES2_1        (TI816X_CLASS | (0x3 << 8))
 
-#define TI814X_CLASS            0x81400034
+#define TI814X_CLASS            0x81400081
 #define TI8148_REV_ES1_0        TI814X_CLASS
 #define TI8148_REV_ES2_0        (TI814X_CLASS | (0x1 << 8))
 #define TI8148_REV_ES2_1        (TI814X_CLASS | (0x2 << 8))
diff --git a/arch/arm/mach-omap2/ti81xx-restart.c b/arch/arm/mach-omap2/ti81xx-restart.c
new file mode 100644
index 000000000000..6c3ce7c46ddd
--- /dev/null
+++ b/arch/arm/mach-omap2/ti81xx-restart.c
@@ -0,0 +1,34 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/reboot.h>
+
+#include "iomap.h"
+#include "common.h"
+#include "control.h"
+#include "prm3xxx.h"
+
+#define TI81XX_PRM_DEVICE_RSTCTRL       0x00a0
+#define TI81XX_GLOBAL_RST_COLD          BIT(1)
+
+/**
+ * ti81xx_restart - trigger a software restart of the SoC
+ * @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
+ * @cmd: passed from the userspace program rebooting the system (if provided)
+ *
+ * Resets the SoC.  For @cmd, see the 'reboot' syscall in
+ * kernel/sys.c.  No return value.
+ *
+ * NOTE: Warm reset does not seem to work, may require resetting
+ * clocks to bypass mode.
+ */
+void ti81xx_restart(enum reboot_mode mode, const char *cmd)
+{
+        omap2_prm_set_mod_reg_bits(TI81XX_GLOBAL_RST_COLD, 0,
+                                   TI81XX_PRM_DEVICE_RSTCTRL);
+        while (1);
+}
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index 4f61148ec168..376b099ba84b 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -146,6 +146,8 @@ static const struct of_device_id omap_timer_match[] __initconst = {
         { .compatible = "ti,omap3430-timer", },
         { .compatible = "ti,omap4430-timer", },
         { .compatible = "ti,omap5430-timer", },
+        { .compatible = "ti,dm814-timer", },
+        { .compatible = "ti,dm816-timer", },
         { .compatible = "ti,am335x-timer", },
         { .compatible = "ti,am335x-timer-1ms", },
         { }