Merge tag 'memory-controller-drv-6.16' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into soc/drivers

Memory controller drivers for v6.16

1. Mediatek: Add support for MT6893 MTK SMI.
2. STM32: Add new driver for STM32 Octo Memory Manager (OMM), which
   manages muxing between two OSPI busses.
3. Several cleanups and minor improvements (OMAP GPMC, Kconfig entries,
   BT1 L2).

* tag 'memory-controller-drv-6.16' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl:
  MAINTAINERS: add entry for STM32 OCTO MEMORY MANAGER driver
  memory: Add STM32 Octo Memory Manager driver
  dt-bindings: memory-controllers: Add STM32 Octo Memory Manager controller
  bus: firewall: Fix missing static inline annotations for stubs
  memory: bt1-l2-ctl: replace scnprintf() with sysfs_emit()
  memory: mtk-smi: Add support for Dimensity 1200 MT6893 SMI
  dt-bindings: memory: mtk-smi: Add support for MT6893
  memory: tegra: Do not enable by default during compile testing
  memory: Simplify 'default' choice in Kconfig
  memory: omap-gpmc: remove GPIO set() and direction_output() callbacks
  memory: omap-gpmc: use the dedicated define for GPIO direction

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnd Bergmann <[email protected]>

Author: arndb

Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml

@@ -33,6 +33,7 @@ properties:
           - mediatek,mt2712-smi-common
           - mediatek,mt6779-smi-common
           - mediatek,mt6795-smi-common
+          - mediatek,mt6893-smi-common
           - mediatek,mt8167-smi-common
           - mediatek,mt8173-smi-common
           - mediatek,mt8183-smi-common

Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.yaml

@@ -21,6 +21,7 @@ properties:
           - mediatek,mt2712-smi-larb
           - mediatek,mt6779-smi-larb
           - mediatek,mt6795-smi-larb
+          - mediatek,mt6893-smi-larb
           - mediatek,mt8167-smi-larb
           - mediatek,mt8173-smi-larb
           - mediatek,mt8183-smi-larb

Documentation/devicetree/bindings/memory-controllers/st,stm32mp25-omm.yaml

@@ -0,0 +1,226 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/memory-controllers/st,stm32mp25-omm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STM32 Octo Memory Manager (OMM)
+
+maintainers:
+  - Patrice Chotard <[email protected]>
+
+description: |
+  The STM32 Octo Memory Manager is a low-level interface that enables an
+  efficient OCTOSPI pin assignment with a full I/O matrix (before alternate
+  function map) and multiplex of single/dual/quad/octal SPI interfaces over
+  the same bus. It Supports up to:
+    - Two single/dual/quad/octal SPI interfaces
+    - Two ports for pin assignment
+
+properties:
+  compatible:
+    const: st,stm32mp25-omm
+
+  "#address-cells":
+    const: 2
+
+  "#size-cells":
+    const: 1
+
+  ranges:
+    description: |
+      Reflects the memory layout per OSPI instance.
+      Format:
+      <chip-select> 0 <registers base address> <size>
+    minItems: 2
+    maxItems: 2
+
+  reg:
+    items:
+      - description: OMM registers
+      - description: OMM memory map area
+
+  reg-names:
+    items:
+      - const: regs
+      - const: memory_map
+
+  memory-region:
+    description:
+      Memory region shared between the 2 OCTOSPI instance.
+      One or two phandle to a node describing a memory mapped region
+      depending of child number.
+    minItems: 1
+    maxItems: 2
+
+  memory-region-names:
+    description:
+      Identify to which OSPI instance the memory region belongs to.
+    items:
+      enum: [ospi1, ospi2]
+    minItems: 1
+    maxItems: 2
+
+  clocks:
+    maxItems: 3
+
+  clock-names:
+    items:
+      - const: omm
+      - const: ospi1
+      - const: ospi2
+
+  resets:
+    maxItems: 3
+
+  reset-names:
+    items:
+      - const: omm
+      - const: ospi1
+      - const: ospi2
+
+  access-controllers:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  st,syscfg-amcr:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description: |
+      The Address Mapping Control Register (AMCR) is used to split the 256MB
+      memory map area shared between the 2 OSPI instance. The Octo Memory
+      Manager sets the AMCR depending of the memory-region configuration.
+      The memory split bitmask description is:
+        - 000: OCTOSPI1 (256 Mbytes), OCTOSPI2 unmapped
+        - 001: OCTOSPI1 (192 Mbytes), OCTOSPI2 (64 Mbytes)
+        - 010: OCTOSPI1 (128 Mbytes), OCTOSPI2 (128 Mbytes)
+        - 011: OCTOSPI1 (64 Mbytes), OCTOSPI2 (192 Mbytes)
+        - 1xx: OCTOSPI1 unmapped, OCTOSPI2 (256 Mbytes)
+    items:
+      - items:
+          - description: phandle to syscfg
+          - description: register offset within syscfg
+          - description: register bitmask for memory split
+
+  st,omm-req2ack-ns:
+    description:
+      In multiplexed mode (MUXEN = 1), this field defines the time in
+      nanoseconds between two transactions.
+    default: 0
+
+  st,omm-cssel-ovr:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      Configure the chip select selector override for the 2 OCTOSPIs.
+      - 0: OCTOSPI1 chip select send to NCS1 OCTOSPI2 chip select send to NCS1
+      - 1: OCTOSPI1 chip select send to NCS2 OCTOSPI2 chip select send to NCS1
+      - 2: OCTOSPI1 chip select send to NCS1 OCTOSPI2 chip select send to NCS2
+      - 3: OCTOSPI1 chip select send to NCS2 OCTOSPI2 chip select send to NCS2
+    minimum: 0
+    maximum: 3
+    default: 0
+
+  st,omm-mux:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      Configure the muxing between the 2 OCTOSPIs busses and the 2 output ports.
+      - 0: direct mode
+      - 1: mux OCTOSPI1 and OCTOSPI2 to port 1
+      - 2: swapped mode
+      - 3: mux OCTOSPI1 and OCTOSPI2 to port 2
+    minimum: 0
+    maximum: 3
+    default: 0
+
+patternProperties:
+  ^spi@[0-9]:
+    type: object
+    $ref: /schemas/spi/st,stm32mp25-ospi.yaml#
+    description: Required spi child node
+
+required:
+  - compatible
+  - reg
+  - "#address-cells"
+  - "#size-cells"
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+  - st,syscfg-amcr
+  - ranges
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/st,stm32mp25-rcc.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/reset/st,stm32mp25-rcc.h>
+    ommanager@40500000 {
+      compatible = "st,stm32mp25-omm";
+      reg = <0x40500000 0x400>, <0x60000000 0x10000000>;
+      reg-names = "regs", "memory_map";
+      ranges = <0 0 0x40430000 0x400>,
+               <1 0 0x40440000 0x400>;
+      memory-region = <&mm_ospi1>, <&mm_ospi2>;
+      memory-region-names = "ospi1", "ospi2";
+      pinctrl-0 = <&ospi_port1_clk_pins_a
+                   &ospi_port1_io03_pins_a
+                   &ospi_port1_cs0_pins_a>;
+      pinctrl-1 = <&ospi_port1_clk_sleep_pins_a
+                   &ospi_port1_io03_sleep_pins_a
+                   &ospi_port1_cs0_sleep_pins_a>;
+      pinctrl-names = "default", "sleep";
+      clocks = <&rcc CK_BUS_OSPIIOM>,
+               <&scmi_clk CK_SCMI_OSPI1>,
+               <&scmi_clk CK_SCMI_OSPI2>;
+      clock-names = "omm", "ospi1", "ospi2";
+      resets = <&rcc OSPIIOM_R>,
+               <&scmi_reset RST_SCMI_OSPI1>,
+               <&scmi_reset RST_SCMI_OSPI2>;
+      reset-names = "omm", "ospi1", "ospi2";
+      access-controllers = <&rifsc 111>;
+      power-domains = <&CLUSTER_PD>;
+      #address-cells = <2>;
+      #size-cells = <1>;
+      st,syscfg-amcr = <&syscfg 0x2c00 0x7>;
+      st,omm-req2ack-ns = <0>;
+      st,omm-mux = <0>;
+      st,omm-cssel-ovr = <0>;
+
+      spi@0 {
+        compatible = "st,stm32mp25-ospi";
+        reg = <0 0 0x400>;
+        memory-region = <&mm_ospi1>;
+        interrupts = <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>;
+        dmas = <&hpdma 2 0x62 0x00003121 0x0>,
+               <&hpdma 2 0x42 0x00003112 0x0>;
+        dma-names = "tx", "rx";
+        clocks = <&scmi_clk CK_SCMI_OSPI1>;
+        resets = <&scmi_reset RST_SCMI_OSPI1>, <&scmi_reset RST_SCMI_OSPI1DLL>;
+        access-controllers = <&rifsc 74>;
+        power-domains = <&CLUSTER_PD>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+        st,syscfg-dlyb = <&syscfg 0x1000>;
+      };
+
+      spi@1 {
+        compatible = "st,stm32mp25-ospi";
+        reg = <1 0 0x400>;
+        memory-region = <&mm_ospi1>;
+        interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
+        dmas = <&hpdma 3 0x62 0x00003121 0x0>,
+               <&hpdma 3 0x42 0x00003112 0x0>;
+        dma-names = "tx", "rx";
+        clocks = <&scmi_clk CK_KER_OSPI2>;
+        resets = <&scmi_reset RST_SCMI_OSPI2>, <&scmi_reset RST_SCMI_OSPI1DLL>;
+        access-controllers = <&rifsc 75>;
+        power-domains = <&CLUSTER_PD>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+        st,syscfg-dlyb = <&syscfg 0x1000>;
+      };
+    };

MAINTAINERS

@@ -22939,6 +22939,12 @@ L:	[email protected]
 S:	Maintained
 F:	drivers/i2c/busses/i2c-stm32*
 
+ST STM32 OCTO MEMORY MANAGER
+M:	Patrice Chotard <[email protected]>
+S:	Maintained
+F:	Documentation/devicetree/bindings/memory-controllers/st,stm32mp25-omm.yaml
+F:	drivers/memory/stm32_omm.c
+
 ST STM32 SPI DRIVER
 M:	Alain Volmat <[email protected]>
 L:	[email protected]

drivers/memory/Kconfig

@@ -32,7 +32,7 @@ config ARM_PL172_MPMC
 
 config ATMEL_EBI
 	bool "Atmel EBI driver"
-	default y if ARCH_AT91
+	default ARCH_AT91
 	depends on ARCH_AT91 || COMPILE_TEST
 	depends on OF
 	select MFD_SYSCON
@@ -147,7 +147,7 @@ config FPGA_DFL_EMIF
 
 config MVEBU_DEVBUS
 	bool "Marvell EBU Device Bus Controller"
-	default y if PLAT_ORION
+	default PLAT_ORION
 	depends on PLAT_ORION || COMPILE_TEST
 	depends on OF
 	help
@@ -198,7 +198,7 @@ config DA8XX_DDRCTL
 
 config PL353_SMC
 	tristate "ARM PL35X Static Memory Controller(SMC) driver"
-	default y if ARM
+	default ARM
 	depends on ARM || COMPILE_TEST
 	depends on ARM_AMBA
 	help
@@ -225,6 +225,23 @@ config STM32_FMC2_EBI
 	  devices (like SRAM, ethernet adapters, FPGAs, LCD displays, ...) on
 	  SOCs containing the FMC2 External Bus Interface.
 
+config STM32_OMM
+	tristate "STM32 Octo Memory Manager"
+	depends on SPI_STM32_OSPI || COMPILE_TEST
+	help
+	  This driver manages the muxing between the 2 OSPI busses and
+	  the 2 output ports. There are 4 possible muxing configurations:
+	  - direct mode (no multiplexing): OSPI1 output is on port 1 and OSPI2
+	       output is on port 2
+	  - OSPI1 and OSPI2 are multiplexed over the same output port 1
+	  - swapped mode (no multiplexing), OSPI1 output is on port 2,
+	       OSPI2 output is on port 1
+	  - OSPI1 and OSPI2 are multiplexed over the same output port 2
+	  It also manages :
+	    - the split of the memory area shared between the 2 OSPI instances.
+	    - chip select selection override.
+	    - the time between 2 transactions in multiplexed mode.
+
 source "drivers/memory/samsung/Kconfig"
 source "drivers/memory/tegra/Kconfig"
 

drivers/memory/Makefile

@@ -24,6 +24,7 @@ obj-$(CONFIG_DA8XX_DDRCTL)	+= da8xx-ddrctl.o
 obj-$(CONFIG_PL353_SMC)		+= pl353-smc.o
 obj-$(CONFIG_RENESAS_RPCIF)	+= renesas-rpc-if.o
 obj-$(CONFIG_STM32_FMC2_EBI)	+= stm32-fmc2-ebi.o
+obj-$(CONFIG_STM32_OMM)		+= stm32_omm.o
 
 obj-$(CONFIG_SAMSUNG_MC)	+= samsung/
 obj-$(CONFIG_TEGRA_MC)		+= tegra/

drivers/memory/bt1-l2-ctl.c

@@ -222,7 +222,7 @@ static ssize_t l2_ctl_latency_show(struct device *dev,
 	if (ret)
 		return ret;
 
-	return scnprintf(buf, PAGE_SIZE, "%u\n", data);
+	return sysfs_emit(buf, "%u\n", data);
 }
 
 static ssize_t l2_ctl_latency_store(struct device *dev,