Merge tag 'arm-multiplatform-5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARMv4T/v5 multiplatform support from Arnd Bergmann:
 "This series has been 12 years in the making, it mostly finishes the
  work that was started with the founding of Linaro to clean up platform
  support in the kernel.

  The largest change here is a cleanup of the omap1 platform, which is
  the final ARM machine type to get converted to the common-clk
  subsystem. All the omap1 specific drivers are now made independent of
  the mach/*.h headers to allow the platform to be part of a generic
  ARMv4/v5 multiplatform kernel.

  The last bit that enables this support is still missing here while we
  wait for some last dependencies to make it into the mainline kernel
  through other subsystems.

  The s3c24xx, ixp4xx, iop32x, ep93xx and dove platforms were all almost
  at the point of allowing multiplatform kernels, this work gets
  completed here along with a few additional cleanup. At the same time,
  the s3c24xx and s3c64xx are now deprecated and expected to get removed
  in the future.

  The PXA and OMAP1 bits are in a separate branch because of
  dependencies. Once both branches are merged, only the three Intel
  StrongARM platforms (RiscPC, Footbridge/NetWinder and StrongARM1100)
  need separate kernels, and there are no plans to include these"

* tag 'arm-multiplatform-5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (61 commits)
  ARM: ixp4xx: Consolidate Kconfig fixing issue
  ARM: versatile: Add missing of_node_put in dcscb_init
  ARM: config: Refresh IXP4xx config after multiplatform
  ARM: omap1: add back omap_set_dma_priority() stub
  ARM: omap: fix missing declaration warnings
  ARM: omap: fix address space warnings from sparse
  ARM: spear: remove include/mach/ subdirectory
  ARM: davinci: remove include/mach/ subdirectory
  ARM: omap2: remove include/mach/ subdirectory
  integrator: remove empty ap_init_early()
  ARM: s3c: fix include path
  MAINTAINERS: omap1: Add Janusz as an additional maintainer
  ARM: omap1: htc_herald: fix typos in comments
  ARM: OMAP1: fix typos in comments
  ARM: OMAP1: clock: Remove noop code
  ARM: OMAP1: clock: Remove unused code
  ARM: OMAP1: clock: Fix UART rate reporting algorithm
  ARM: OMAP1: clock: Fix early UART rate issues
  ARM: OMAP1: Prepare for conversion of OMAP1 clocks to CCF
  ARM: omap1: fix build with no SoC selected
  ...

15 files changed, 224 insertions, 95 deletions

diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 02c253de9b6e..a8adbb4d478a 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -123,6 +123,8 @@ config OMAP_INTERCONNECT_BARRIER
 	bool
 	select ARM_HEAVY_MB
 	
+config ARCH_OMAP
+	bool
 
 if ARCH_OMAP2PLUS
 
@@ -153,6 +155,53 @@ config SOC_HAS_REALTIME_COUNTER
 	depends on SOC_OMAP5 || SOC_DRA7XX
 	default y
 
+config POWER_AVS_OMAP
+	bool "AVS(Adaptive Voltage Scaling) support for OMAP IP versions 1&2"
+	depends on (ARCH_OMAP3 || ARCH_OMAP4) && PM
+	select POWER_SUPPLY
+	help
+	  Say Y to enable AVS(Adaptive Voltage Scaling)
+	  support on OMAP containing the version 1 or
+	  version 2 of the SmartReflex IP.
+	  V1 is the 65nm version used in OMAP3430.
+	  V2 is the update for the 45nm version of the IP used in OMAP3630
+	  and OMAP4430
+
+	  Please note, that by default SmartReflex is only
+	  initialized and not enabled. To enable the automatic voltage
+	  compensation for vdd mpu and vdd core from user space,
+	  user must write 1 to
+		/debug/smartreflex/sr_<X>/autocomp,
+	  where X is mpu_iva or core for OMAP3.
+	  Optionally autocompensation can be enabled in the kernel
+	  by default during system init via the enable_on_init flag
+	  which an be passed as platform data to the smartreflex driver.
+
+config POWER_AVS_OMAP_CLASS3
+	bool "Class 3 mode of Smartreflex Implementation"
+	depends on POWER_AVS_OMAP && TWL4030_CORE
+	help
+	  Say Y to enable Class 3 implementation of Smartreflex
+
+	  Class 3 implementation of Smartreflex employs continuous hardware
+	  voltage calibration.
+
+config OMAP3_L2_AUX_SECURE_SAVE_RESTORE
+	bool "OMAP3 HS/EMU save and restore for L2 AUX control register"
+	depends on ARCH_OMAP3 && PM
+	help
+	  Without this option, L2 Auxiliary control register contents are
+	  lost during off-mode entry on HS/EMU devices. This feature
+	  requires support from PPA / boot-loader in HS/EMU devices, which
+	  currently does not exist by default.
+
+config OMAP3_L2_AUX_SECURE_SERVICE_SET_ID
+	int "Service ID for the support routine to set L2 AUX control"
+	depends on OMAP3_L2_AUX_SECURE_SAVE_RESTORE
+	default 43
+	help
+	  PPA routine service ID for setting L2 auxiliary control register.
+
 comment "OMAP Core Type"
 	depends on ARCH_OMAP2
 
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 8306ad686bc8..2feb9f6630af 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -3,9 +3,6 @@
 # Makefile for the linux kernel.
 #
 
-ccflags-y := -I$(srctree)/$(src)/include \
-	-I$(srctree)/arch/arm/plat-omap/include
-
 # Common support
 obj-y := id.o io.o control.o devices.o fb.o pm.o \
 	 common.o dma.o omap-headsmp.o sram.o
diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index 32f58f58515e..bd5981945239 100644
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -266,7 +266,7 @@ extern void omap4_sar_ram_init(void);
 extern void __iomem *omap4_get_sar_ram_base(void);
 extern void omap4_mpuss_early_init(void);
 extern void omap_do_wfi(void);
-
+extern void omap_interconnect_sync(void);
 
 #ifdef CONFIG_SMP
 /* Needed for secondary core boot */
@@ -360,5 +360,16 @@ extern int omap_dss_reset(struct omap_hwmod *);
 /* SoC specific clock initializer */
 int omap_clk_init(void);
 
+#if IS_ENABLED(CONFIG_OMAP_IOMMU)
+int omap_iommu_set_pwrdm_constraint(struct platform_device *pdev, bool request,
+				    u8 *pwrst);
+#else
+static inline int omap_iommu_set_pwrdm_constraint(struct platform_device *pdev,
+						  bool request, u8 *pwrst)
+{
+	return 0;
+}
+#endif
+
 #endif /* __ASSEMBLER__ */
 #endif /* __ARCH_ARM_MACH_OMAP2PLUS_COMMON_H */
diff --git a/arch/arm/mach-omap2/dma.c b/arch/arm/mach-omap2/dma.c
index dfc9b21ff19b..830cd4e7eb44 100644
--- a/arch/arm/mach-omap2/dma.c
+++ b/arch/arm/mach-omap2/dma.c
@@ -30,6 +30,7 @@
 #include <linux/omap-dma.h>
 
 #include "soc.h"
+#include "common.h"
 
 static const struct omap_dma_reg reg_map[] = {
 	[REVISION]	= { 0x0000, 0x00, OMAP_DMA_REG_32BIT },
diff --git a/arch/arm/mach-omap2/include/mach/hardware.h b/arch/arm/mach-omap2/include/mach/hardware.h
deleted file mode 100644
index 54492dbf6973..000000000000
--- a/arch/arm/mach-omap2/include/mach/hardware.h
+++ /dev/null
@@ -1,3 +0,0 @@
-/*
- * arch/arm/mach-omap2/include/mach/hardware.h
- */
diff --git a/arch/arm/mach-omap2/include/mach/irqs.h b/arch/arm/mach-omap2/include/mach/irqs.h
deleted file mode 100644
index ba5282cafa42..000000000000
--- a/arch/arm/mach-omap2/include/mach/irqs.h
+++ /dev/null
@@ -1,3 +0,0 @@
-/*
- * arch/arm/mach-omap2/include/mach/irqs.h
- */
diff --git a/arch/arm/mach-omap2/include/mach/serial.h b/arch/arm/mach-omap2/include/mach/serial.h
deleted file mode 100644
index 7ca1fcff453b..000000000000
--- a/arch/arm/mach-omap2/include/mach/serial.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (C) 2009 Texas Instruments
- * Added OMAP4 support- Santosh Shilimkar <santosh.shilimkar@ti.com>
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-/* OMAP2 serial ports */
-#define OMAP2_UART1_BASE	0x4806a000
-#define OMAP2_UART2_BASE	0x4806c000
-#define OMAP2_UART3_BASE	0x4806e000
-
-/* OMAP3 serial ports */
-#define OMAP3_UART1_BASE	OMAP2_UART1_BASE
-#define OMAP3_UART2_BASE	OMAP2_UART2_BASE
-#define OMAP3_UART3_BASE	0x49020000
-#define OMAP3_UART4_BASE	0x49042000	/* Only on 36xx */
-#define OMAP3_UART4_AM35XX_BASE	0x4809E000	/* Only on AM35xx */
-
-/* OMAP4 serial ports */
-#define OMAP4_UART1_BASE	OMAP2_UART1_BASE
-#define OMAP4_UART2_BASE	OMAP2_UART2_BASE
-#define OMAP4_UART3_BASE	0x48020000
-#define OMAP4_UART4_BASE	0x4806e000
-
-/* TI81XX serial ports */
-#define TI81XX_UART1_BASE	0x48020000
-#define TI81XX_UART2_BASE	0x48022000
-#define TI81XX_UART3_BASE	0x48024000
-
-/* AM3505/3517 UART4 */
-#define AM35XX_UART4_BASE	0x4809E000	/* Only on AM3505/3517 */
-
-/* AM33XX serial port */
-#define AM33XX_UART1_BASE	0x44E09000
-
-/* OMAP5 serial ports */
-#define OMAP5_UART1_BASE	OMAP2_UART1_BASE
-#define OMAP5_UART2_BASE	OMAP2_UART2_BASE
-#define OMAP5_UART3_BASE	OMAP4_UART3_BASE
-#define OMAP5_UART4_BASE	OMAP4_UART4_BASE
-#define OMAP5_UART5_BASE	0x48066000
-#define OMAP5_UART6_BASE	0x48068000
-
-/* External port on Zoom2/3 */
-#define ZOOM_UART_BASE		0x10000000
-#define ZOOM_UART_VIRT		0xfa400000
-
-#define OMAP_PORT_SHIFT		2
-#define ZOOM_PORT_SHIFT		1
-
-#define OMAP24XX_BASE_BAUD	(48000000/16)
-
-#ifndef __ASSEMBLER__
-
-struct omap_board_data;
-struct omap_uart_port_info;
-
-extern void omap_serial_init(void);
-extern void omap_serial_board_init(struct omap_uart_port_info *platform_data);
-extern void omap_serial_init_port(struct omap_board_data *bdata,
-		struct omap_uart_port_info *platform_data);
-#endif
diff --git a/arch/arm/mach-omap2/omap-iommu.c b/arch/arm/mach-omap2/omap-iommu.c
index 93c20bbd7b7e..9c8a85198e16 100644
--- a/arch/arm/mach-omap2/omap-iommu.c
+++ b/arch/arm/mach-omap2/omap-iommu.c
@@ -13,6 +13,7 @@
 
 #include "clockdomain.h"
 #include "powerdomain.h"
+#include "common.h"
 
 struct pwrdm_link {
 	struct device *dev;
diff --git a/arch/arm/mach-omap2/omap-secure.c b/arch/arm/mach-omap2/omap-secure.c
index 11677fc2968f..fb9c114b9dd7 100644
--- a/arch/arm/mach-omap2/omap-secure.c
+++ b/arch/arm/mach-omap2/omap-secure.c
@@ -124,7 +124,7 @@ phys_addr_t omap_secure_ram_mempool_base(void)
 }
 
 #if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
-u32 omap3_save_secure_ram(void __iomem *addr, int size)
+u32 omap3_save_secure_ram(void *addr, int size)
 {
 	static u32 param[5];
 	u32 ret;
diff --git a/arch/arm/mach-omap2/omap-secure.h b/arch/arm/mach-omap2/omap-secure.h
index 172069f31616..9e67d4efdd0c 100644
--- a/arch/arm/mach-omap2/omap-secure.h
+++ b/arch/arm/mach-omap2/omap-secure.h
@@ -73,7 +73,7 @@ extern u32 omap_smc3(u32 id, u32 process, u32 flag, u32 pargs);
 extern phys_addr_t omap_secure_ram_mempool_base(void);
 extern int omap_secure_ram_reserve_memblock(void);
 extern u32 save_secure_ram_context(u32 args_pa);
-extern u32 omap3_save_secure_ram(void __iomem *save_regs, int size);
+extern u32 omap3_save_secure_ram(void *save_regs, int size);
 
 extern u32 rx51_secure_dispatcher(u32 idx, u32 process, u32 flag, u32 nargs,
 				  u32 arg1, u32 arg2, u32 arg3, u32 arg4);
diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c
index 0b80f8bcd304..6d1eb4eefefe 100644
--- a/arch/arm/mach-omap2/omap4-common.c
+++ b/arch/arm/mach-omap2/omap4-common.c
@@ -139,7 +139,7 @@ static int __init omap4_sram_init(void)
 		pr_warn("%s:Unable to get sram pool needed to handle errata I688\n",
 			__func__);
 	else
-		sram_sync = (void *)gen_pool_alloc(sram_pool, PAGE_SIZE);
+		sram_sync = (void __iomem *)gen_pool_alloc(sram_pool, PAGE_SIZE);
 
 	return 0;
 }
diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
index e7fd29a502a0..13f1b89f74b8 100644
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -43,17 +43,6 @@ struct pdata_init {
 static struct of_dev_auxdata omap_auxdata_lookup[];
 static struct twl4030_gpio_platform_data twl_gpio_auxdata;
 
-#if IS_ENABLED(CONFIG_OMAP_IOMMU)
-int omap_iommu_set_pwrdm_constraint(struct platform_device *pdev, bool request,
-				    u8 *pwrst);
-#else
-static inline int omap_iommu_set_pwrdm_constraint(struct platform_device *pdev,
-						  bool request, u8 *pwrst)
-{
-	return 0;
-}
-#endif
-
 #ifdef CONFIG_MACH_NOKIA_N8X0
 static void __init omap2420_n8x0_legacy_init(void)
 {
diff --git a/arch/arm/mach-omap2/serial.h b/arch/arm/mach-omap2/serial.h
index c4014f013df0..7ca1fcff453b 100644
--- a/arch/arm/mach-omap2/serial.h
+++ b/arch/arm/mach-omap2/serial.h
@@ -1 +1,66 @@
-#include <mach/serial.h>
+/*
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support- Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+/* OMAP2 serial ports */
+#define OMAP2_UART1_BASE	0x4806a000
+#define OMAP2_UART2_BASE	0x4806c000
+#define OMAP2_UART3_BASE	0x4806e000
+
+/* OMAP3 serial ports */
+#define OMAP3_UART1_BASE	OMAP2_UART1_BASE
+#define OMAP3_UART2_BASE	OMAP2_UART2_BASE
+#define OMAP3_UART3_BASE	0x49020000
+#define OMAP3_UART4_BASE	0x49042000	/* Only on 36xx */
+#define OMAP3_UART4_AM35XX_BASE	0x4809E000	/* Only on AM35xx */
+
+/* OMAP4 serial ports */
+#define OMAP4_UART1_BASE	OMAP2_UART1_BASE
+#define OMAP4_UART2_BASE	OMAP2_UART2_BASE
+#define OMAP4_UART3_BASE	0x48020000
+#define OMAP4_UART4_BASE	0x4806e000
+
+/* TI81XX serial ports */
+#define TI81XX_UART1_BASE	0x48020000
+#define TI81XX_UART2_BASE	0x48022000
+#define TI81XX_UART3_BASE	0x48024000
+
+/* AM3505/3517 UART4 */
+#define AM35XX_UART4_BASE	0x4809E000	/* Only on AM3505/3517 */
+
+/* AM33XX serial port */
+#define AM33XX_UART1_BASE	0x44E09000
+
+/* OMAP5 serial ports */
+#define OMAP5_UART1_BASE	OMAP2_UART1_BASE
+#define OMAP5_UART2_BASE	OMAP2_UART2_BASE
+#define OMAP5_UART3_BASE	OMAP4_UART3_BASE
+#define OMAP5_UART4_BASE	OMAP4_UART4_BASE
+#define OMAP5_UART5_BASE	0x48066000
+#define OMAP5_UART6_BASE	0x48068000
+
+/* External port on Zoom2/3 */
+#define ZOOM_UART_BASE		0x10000000
+#define ZOOM_UART_VIRT		0xfa400000
+
+#define OMAP_PORT_SHIFT		2
+#define ZOOM_PORT_SHIFT		1
+
+#define OMAP24XX_BASE_BAUD	(48000000/16)
+
+#ifndef __ASSEMBLER__
+
+struct omap_board_data;
+struct omap_uart_port_info;
+
+extern void omap_serial_init(void);
+extern void omap_serial_board_init(struct omap_uart_port_info *platform_data);
+extern void omap_serial_init_port(struct omap_board_data *bdata,
+		struct omap_uart_port_info *platform_data);
+#endif
diff --git a/arch/arm/mach-omap2/sram.c b/arch/arm/mach-omap2/sram.c
index c98855f5594b..39cf270da718 100644
--- a/arch/arm/mach-omap2/sram.c
+++ b/arch/arm/mach-omap2/sram.c
@@ -18,6 +18,7 @@
 #include <asm/fncpy.h>
 #include <asm/tlb.h>
 #include <asm/cacheflush.h>
+#include <asm/set_memory.h>
 
 #include <asm/mach/map.h>
 
@@ -47,8 +48,68 @@
 #define ROUND_DOWN(value,boundary)	((value) & (~((boundary)-1)))
 
 static unsigned long omap_sram_start;
-static unsigned long omap_sram_skip;
 static unsigned long omap_sram_size;
+static void __iomem *omap_sram_base;
+static unsigned long omap_sram_skip;
+static void __iomem *omap_sram_ceil;
+
+/*
+ * Memory allocator for SRAM: calculates the new ceiling address
+ * for pushing a function using the fncpy API.
+ *
+ * Note that fncpy requires the returned address to be aligned
+ * to an 8-byte boundary.
+ */
+static void *omap_sram_push_address(unsigned long size)
+{
+	unsigned long available, new_ceil = (unsigned long)omap_sram_ceil;
+
+	available = omap_sram_ceil - (omap_sram_base + omap_sram_skip);
+
+	if (size > available) {
+		pr_err("Not enough space in SRAM\n");
+		return NULL;
+	}
+
+	new_ceil -= size;
+	new_ceil = ROUND_DOWN(new_ceil, FNCPY_ALIGN);
+	omap_sram_ceil = IOMEM(new_ceil);
+
+	return (void __force *)omap_sram_ceil;
+}
+
+void *omap_sram_push(void *funcp, unsigned long size)
+{
+	void *sram;
+	unsigned long base;
+	int pages;
+	void *dst = NULL;
+
+	sram = omap_sram_push_address(size);
+	if (!sram)
+		return NULL;
+
+	base = (unsigned long)sram & PAGE_MASK;
+	pages = PAGE_ALIGN(size) / PAGE_SIZE;
+
+	set_memory_rw(base, pages);
+
+	dst = fncpy(sram, funcp, size);
+
+	set_memory_ro(base, pages);
+	set_memory_x(base, pages);
+
+	return dst;
+}
+
+/*
+ * The SRAM context is lost during off-idle and stack
+ * needs to be reset.
+ */
+static void omap_sram_reset(void)
+{
+	omap_sram_ceil = omap_sram_base + omap_sram_size;
+}
 
 /*
  * Depending on the target RAMFS firewall setup, the public usable amount of
@@ -119,6 +180,8 @@ static void __init omap_detect_sram(void)
  */
 static void __init omap2_map_sram(void)
 {
+	unsigned long base;
+	int pages;
 	int cached = 1;
 
 	if (cpu_is_omap34xx()) {
@@ -132,8 +195,30 @@ static void __init omap2_map_sram(void)
 		cached = 0;
 	}
 
-	omap_map_sram(omap_sram_start, omap_sram_size,
-			omap_sram_skip, cached);
+	if (omap_sram_size == 0)
+		return;
+
+	omap_sram_start = ROUND_DOWN(omap_sram_start, PAGE_SIZE);
+	omap_sram_base = __arm_ioremap_exec(omap_sram_start, omap_sram_size, cached);
+	if (!omap_sram_base) {
+		pr_err("SRAM: Could not map\n");
+		return;
+	}
+
+	omap_sram_reset();
+
+	/*
+	 * Looks like we need to preserve some bootloader code at the
+	 * beginning of SRAM for jumping to flash for reboot to work...
+	 */
+	memset_io(omap_sram_base + omap_sram_skip, 0,
+		  omap_sram_size - omap_sram_skip);
+
+	base = (unsigned long)omap_sram_base;
+	pages = PAGE_ALIGN(omap_sram_size) / PAGE_SIZE;
+
+	set_memory_ro(base, pages);
+	set_memory_x(base, pages);
 }
 
 static void (*_omap2_sram_ddr_init)(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
diff --git a/arch/arm/mach-omap2/sram.h b/arch/arm/mach-omap2/sram.h
index 447bd3eed0fd..271062f23482 100644
--- a/arch/arm/mach-omap2/sram.h
+++ b/arch/arm/mach-omap2/sram.h
@@ -4,7 +4,6 @@
  */
 
 #ifndef __ASSEMBLY__
-#include <plat/sram.h>
 
 extern void omap2_sram_ddr_init(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
 				u32 base_cs, u32 force_unlock);
@@ -14,6 +13,10 @@ extern u32 omap2_set_prcm(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass);
 
 extern void omap3_sram_restore_context(void);
 
+extern int __init omap_sram_init(void);
+
+extern void *omap_sram_push(void *funcp, unsigned long size);
+
 /* Do not use these */
 extern void omap24xx_sram_reprogram_clock(u32 ckctl, u32 dpllctl);
 extern unsigned long omap24xx_sram_reprogram_clock_sz;