Merge tag 'spi-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "A moderately busy release for SPI, the main core update was the
  merging of support for multiple chip selects, used in some flash
  configurations. There were also big overhauls for the AXI SPI Engine
  and PL022 drivers, plus some new device support for ST.

  There's a few patches for other trees, API updates to allow the
  multiple chip select support and one of the naming modernisations
  touched a controller embedded in the USB code.

   - Support for multiple chip selects.

   - A big overhaul for the AXI SPI engine driver, modernising it and
     adding a bunch of new features.

   - Modernisation of the PL022 driver, fixing some issues with
     submitting messages while in atomic context in the process.

   - Many drivers were converted to use new APIs which avoid outdated
     terminology for devices and controllers.

   - Support for ST Microelectronics STM32F7 and STM32MP25, and Renesas
     RZ/Five"

* tag 'spi-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (83 commits)
  spi: stm32: add st,stm32mp25-spi compatible supporting STM32MP25 soc
  dt-bindings: spi: stm32: add st,stm32mp25-spi compatible
  spi: stm32: use dma_get_slave_caps prior to configuring dma channel
  spi: axi-spi-engine: fix struct member doc warnings
  spi: pl022: update description of internal_cs_control()
  spi: pl022: delete description of cur_msg
  spi: dw: Remove Intel Thunder Bay SOC support
  spi: dw: Remove Intel Thunder Bay SOC support
  spi: sh-msiof: Enforce fixed DTDL for R-Car H3
  spi: ljca: switch to use devm_spi_alloc_host()
  spi: cs42l43: switch to use devm_spi_alloc_host()
  spi: zynqmp-gqspi: switch to use modern name
  spi: zynq-qspi: switch to use modern name
  spi: xtensa-xtfpga: switch to use modern name
  spi: xlp: switch to use modern name
  spi: xilinx: switch to use modern name
  spi: xcomm: switch to use modern name
  spi: uniphier: switch to use modern name
  spi: topcliff-pch: switch to use modern name
  spi: wpcm-fiu: switch to use devm_spi_alloc_host()
  ...

6 files changed, 97 insertions, 65 deletions

diff --git a/Documentation/devicetree/bindings/spi/adi,axi-spi-engine.txt b/Documentation/devicetree/bindings/spi/adi,axi-spi-engine.txt
deleted file mode 100644
index 8a18d71e68791f..00000000000000
--- a/Documentation/devicetree/bindings/spi/adi,axi-spi-engine.txt
+++ /dev/null
@@ -1,31 +0,0 @@
-Analog Devices AXI SPI Engine controller Device Tree Bindings
-
-Required properties:
-- compatible		: Must be "adi,axi-spi-engine-1.00.a""
-- reg			: Physical base address and size of the register map.
-- interrupts		: Property with a value describing the interrupt
-			  number.
-- clock-names		: List of input clock names - "s_axi_aclk", "spi_clk"
-- clocks		: Clock phandles and specifiers (See clock bindings for
-			  details on clock-names and clocks).
-- #address-cells	: Must be <1>
-- #size-cells		: Must be <0>
-
-Optional subnodes:
-	Subnodes are use to represent the SPI slave devices connected to the SPI
-	master. They follow the generic SPI bindings as outlined in spi-bus.txt.
-
-Example:
-
-    spi@@44a00000 {
-		compatible = "adi,axi-spi-engine-1.00.a";
-		reg = <0x44a00000 0x1000>;
-		interrupts = <0 56 4>;
-		clocks = <&clkc 15 &clkc 15>;
-		clock-names = "s_axi_aclk", "spi_clk";
-
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		/* SPI devices */
-    };
diff --git a/Documentation/devicetree/bindings/spi/adi,axi-spi-engine.yaml b/Documentation/devicetree/bindings/spi/adi,axi-spi-engine.yaml
new file mode 100644
index 00000000000000..d48faa42d025b0
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/adi,axi-spi-engine.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/adi,axi-spi-engine.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AXI SPI Engine Controller
+
+description: |
+  The AXI SPI Engine controller is part of the SPI Engine framework[1] and
+  allows memory mapped access to the SPI Engine control bus. This allows it
+  to be used as a general purpose software driven SPI controller as well as
+  some optional advanced acceleration and offloading capabilities.
+
+  [1] https://wiki.analog.com/resources/fpga/peripherals/spi_engine
+
+maintainers:
+  - Michael Hennerich <Michael.Hennerich@analog.com>
+  - Nuno Sá <nuno.sa@analog.com>
+
+allOf:
+  - $ref: /schemas/spi/spi-controller.yaml#
+
+properties:
+  compatible:
+    const: adi,axi-spi-engine-1.00.a
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: The AXI interconnect clock.
+      - description: The SPI controller clock.
+
+  clock-names:
+    items:
+      - const: s_axi_aclk
+      - const: spi_clk
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    spi@44a00000 {
+        compatible = "adi,axi-spi-engine-1.00.a";
+        reg = <0x44a00000 0x1000>;
+        interrupts = <0 56 4>;
+        clocks = <&clkc 15>, <&clkc 15>;
+        clock-names = "s_axi_aclk", "spi_clk";
+
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        /* SPI devices */
+    };
diff --git a/Documentation/devicetree/bindings/spi/renesas,rspi.yaml b/Documentation/devicetree/bindings/spi/renesas,rspi.yaml
index 4d8ec69214c971..0ef3f842198698 100644
--- a/Documentation/devicetree/bindings/spi/renesas,rspi.yaml
+++ b/Documentation/devicetree/bindings/spi/renesas,rspi.yaml
@@ -21,7 +21,7 @@ properties:
           - enum:
               - renesas,rspi-r7s72100  # RZ/A1H
               - renesas,rspi-r7s9210   # RZ/A2
-              - renesas,r9a07g043-rspi # RZ/G2UL
+              - renesas,r9a07g043-rspi # RZ/G2UL and RZ/Five
               - renesas,r9a07g044-rspi # RZ/G2{L,LC}
               - renesas,r9a07g054-rspi # RZ/V2L
           - const: renesas,rspi-rz
diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
index 6348a387a21c31..fde3776a558bcd 100644
--- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
+++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
@@ -72,8 +72,6 @@ properties:
           - const: snps,dw-apb-ssi
       - description: Intel Keem Bay SPI Controller
         const: intel,keembay-ssi
-      - description: Intel Thunder Bay SPI Controller
-        const: intel,thunderbay-ssi
       - description: Intel Mount Evans Integrated Management Complex SPI Controller
         const: intel,mountevans-imc-ssi
       - description: AMD Pensando Elba SoC SPI Controller
diff --git a/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml b/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml
index ae0f082bd3772f..4bd9aeb8120859 100644
--- a/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml
+++ b/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml
@@ -23,7 +23,9 @@ properties:
   compatible:
     enum:
       - st,stm32f4-spi
+      - st,stm32f7-spi
       - st,stm32h7-spi
+      - st,stm32mp25-spi
 
   reg:
     maxItems: 1
diff --git a/Documentation/spi/pxa2xx.rst b/Documentation/spi/pxa2xx.rst
index 04f2a3856c406f..19479b801826cf 100644
--- a/Documentation/spi/pxa2xx.rst
+++ b/Documentation/spi/pxa2xx.rst
@@ -3,13 +3,13 @@ PXA2xx SPI on SSP driver HOWTO
 ==============================
 
 This a mini HOWTO on the pxa2xx_spi driver. The driver turns a PXA2xx
-synchronous serial port into an SPI master controller
+synchronous serial port into an SPI host controller
 (see Documentation/spi/spi-summary.rst). The driver has the following features
 
 - Support for any PXA2xx and compatible SSP.
 - SSP PIO and SSP DMA data transfers.
 - External and Internal (SSPFRM) chip selects.
-- Per slave device (chip) configuration.
+- Per peripheral device (chip) configuration.
 - Full suspend, freeze, resume support.
 
 The driver is built around a &struct spi_message FIFO serviced by kernel
@@ -17,10 +17,10 @@ thread. The kernel thread, spi_pump_messages(), drives message FIFO and
 is responsible for queuing SPI transactions and setting up and launching
 the DMA or interrupt driven transfers.
 
-Declaring PXA2xx Master Controllers
------------------------------------
-Typically, for a legacy platform, an SPI master is defined in the
-arch/.../mach-*/board-*.c as a "platform device". The master configuration
+Declaring PXA2xx host controllers
+---------------------------------
+Typically, for a legacy platform, an SPI host controller is defined in the
+arch/.../mach-*/board-*.c as a "platform device". The host controller configuration
 is passed to the driver via a table found in include/linux/spi/pxa2xx_spi.h::
 
   struct pxa2xx_spi_controller {
@@ -30,7 +30,7 @@ is passed to the driver via a table found in include/linux/spi/pxa2xx_spi.h::
   };
 
 The "pxa2xx_spi_controller.num_chipselect" field is used to determine the number of
-slave device (chips) attached to this SPI master.
+peripheral devices (chips) attached to this SPI host controller.
 
 The "pxa2xx_spi_controller.enable_dma" field informs the driver that SSP DMA should
 be used. This caused the driver to acquire two DMA channels: Rx channel and
@@ -40,8 +40,8 @@ See the "PXA2xx Developer Manual" section "DMA Controller".
 For the new platforms the description of the controller and peripheral devices
 comes from Device Tree or ACPI.
 
-NSSP MASTER SAMPLE
-------------------
+NSSP HOST SAMPLE
+----------------
 Below is a sample configuration using the PXA255 NSSP for a legacy platform::
 
   static struct resource pxa_spi_nssp_resources[] = {
@@ -57,7 +57,7 @@ Below is a sample configuration using the PXA255 NSSP for a legacy platform::
 	},
   };
 
-  static struct pxa2xx_spi_controller pxa_nssp_master_info = {
+  static struct pxa2xx_spi_controller pxa_nssp_controller_info = {
 	.num_chipselect = 1, /* Matches the number of chips attached to NSSP */
 	.enable_dma = 1, /* Enables NSSP DMA */
   };
@@ -68,7 +68,7 @@ Below is a sample configuration using the PXA255 NSSP for a legacy platform::
 	.resource = pxa_spi_nssp_resources,
 	.num_resources = ARRAY_SIZE(pxa_spi_nssp_resources),
 	.dev = {
-		.platform_data = &pxa_nssp_master_info, /* Passed to driver */
+		.platform_data = &pxa_nssp_controller_info, /* Passed to driver */
 	},
   };
 
@@ -81,17 +81,17 @@ Below is a sample configuration using the PXA255 NSSP for a legacy platform::
 	(void)platform_add_device(devices, ARRAY_SIZE(devices));
   }
 
-Declaring Slave Devices
------------------------
-Typically, for a legacy platform, each SPI slave (chip) is defined in the
+Declaring peripheral devices
+----------------------------
+Typically, for a legacy platform, each SPI peripheral device (chip) is defined in the
 arch/.../mach-*/board-*.c using the "spi_board_info" structure found in
 "linux/spi/spi.h". See "Documentation/spi/spi-summary.rst" for additional
 information.
 
-Each slave device attached to the PXA must provide slave specific configuration
+Each peripheral device (chip) attached to the PXA2xx must provide specific chip configuration
 information via the structure "pxa2xx_spi_chip" found in
-"include/linux/spi/pxa2xx_spi.h".  The pxa2xx_spi master controller driver
-will uses the configuration whenever the driver communicates with the slave
+"include/linux/spi/pxa2xx_spi.h". The PXA2xx host controller driver will use
+the configuration whenever the driver communicates with the peripheral
 device. All fields are optional.
 
 ::
@@ -123,7 +123,7 @@ dma_burst_size == 0.
 The "pxa2xx_spi_chip.timeout" fields is used to efficiently handle
 trailing bytes in the SSP receiver FIFO. The correct value for this field is
 dependent on the SPI bus speed ("spi_board_info.max_speed_hz") and the specific
-slave device.  Please note that the PXA2xx SSP 1 does not support trailing byte
+peripheral device. Please note that the PXA2xx SSP 1 does not support trailing byte
 timeouts and must busy-wait any trailing bytes.
 
 NOTE: the SPI driver cannot control the chip select if SSPFRM is used, so the
@@ -132,8 +132,8 @@ asserted around the complete message. Use SSPFRM as a GPIO (through a descriptor
 to accommodate these chips.
 
 
-NSSP SLAVE SAMPLE
------------------
+NSSP PERIPHERAL SAMPLE
+----------------------
 For a legacy platform or in some other cases, the pxa2xx_spi_chip structure
 is passed to the pxa2xx_spi driver in the "spi_board_info.controller_data"
 field. Below is a sample configuration using the PXA255 NSSP.
@@ -161,16 +161,16 @@ field. Below is a sample configuration using the PXA255 NSSP.
 		.bus_num = 2, /* Framework bus number */
 		.chip_select = 0, /* Framework chip select */
 		.platform_data = NULL; /* No spi_driver specific config */
-		.controller_data = &cs8415a_chip_info, /* Master chip config */
-		.irq = STREETRACER_APCI_IRQ, /* Slave device interrupt */
+		.controller_data = &cs8415a_chip_info, /* Host controller config */
+		.irq = STREETRACER_APCI_IRQ, /* Peripheral device interrupt */
 	},
 	{
 		.modalias = "cs8405a", /* Name of spi_driver for this device */
 		.max_speed_hz = 3686400, /* Run SSP as fast a possible */
 		.bus_num = 2, /* Framework bus number */
 		.chip_select = 1, /* Framework chip select */
-		.controller_data = &cs8405a_chip_info, /* Master chip config */
-		.irq = STREETRACER_APCI_IRQ, /* Slave device interrupt */
+		.controller_data = &cs8405a_chip_info, /* Host controller config */
+		.irq = STREETRACER_APCI_IRQ, /* Peripheral device interrupt */
 	},
   };
 
@@ -193,17 +193,14 @@ mode supports both coherent and stream based DMA mappings.
 The following logic is used to determine the type of I/O to be used on
 a per "spi_transfer" basis::
 
-  if !enable_dma then
-	always use PIO transfers
+  if spi_message.len > 65536 then
+	if spi_message.is_dma_mapped or rx_dma_buf != 0 or tx_dma_buf != 0 then
+		reject premapped transfers
 
-  if spi_message.len > 8191 then
 	print "rate limited" warning
 	use PIO transfers
 
-  if spi_message.is_dma_mapped and rx_dma_buf != 0 and tx_dma_buf != 0 then
-	use coherent DMA mode
-
-  if rx_buf and tx_buf are aligned on 8 byte boundary then
+  if enable_dma and the size is in the range [DMA burst size..65536] then
 	use streaming DMA mode
 
   otherwise