Merge tag 'tty-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel…

…/git/gregkh/tty

Pull tty / serial updates from Greg KH:
 "Here is the big set of tty and serial driver patches for 5.14-rc1.

  A bit more than normal, but nothing major, lots of cleanups.
  Highlights are:

   - lots of tty api cleanups and mxser driver cleanups from Jiri

   - build warning fixes

   - various serial driver updates

   - coding style cleanups

   - various tty driver minor fixes and updates

   - removal of broken and disable r3964 line discipline (finally!)

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (227 commits)
  serial: mvebu-uart: remove unused member nb from struct mvebu_uart
  arm64: dts: marvell: armada-37xx: Fix reg for standard variant of UART
  dt-bindings: mvebu-uart: fix documentation
  serial: mvebu-uart: correctly calculate minimal possible baudrate
  serial: mvebu-uart: do not allow changing baudrate when uartclk is not available
  serial: mvebu-uart: fix calculation of clock divisor
  tty: make linux/tty_flip.h self-contained
  serial: Prefer unsigned int to bare use of unsigned
  serial: 8250: 8250_omap: Fix possible interrupt storm on K3 SoCs
  serial: qcom_geni_serial: use DT aliases according to DT bindings
  Revert "tty: serial: Add UART driver for Cortina-Access platform"
  tty: serial: Add UART driver for Cortina-Access platform
  MAINTAINERS: add me back as mxser maintainer
  mxser: Documentation, fix typos
  mxser: Documentation, make the docs up-to-date
  mxser: Documentation, remove traces of callout device
  mxser: introduce mxser_16550A_or_MUST helper
  mxser: rename flags to old_speed in mxser_set_serial_info
  mxser: use port variable in mxser_set_serial_info
  mxser: access info->MCR under info->slock
  ...

Documentation/admin-guide/kernel-parameters.txt

@@ -1122,6 +1122,11 @@
 			the driver will use only 32-bit accessors to read/write
 			the device registers.
 
+		liteuart,<addr>
+			Start an early console on a litex serial port at the
+			specified address. The serial port must already be
+			setup and configured. Options are not yet supported.
+
 		meson,<addr>
 			Start an early, polled-mode console on a meson serial
 			port at the specified address. The serial port must

Documentation/devicetree/bindings/serial/8250.yaml

@@ -10,7 +10,7 @@ maintainers:
   - [email protected]
 
 allOf:
-  - $ref: /schemas/serial.yaml#
+  - $ref: serial.yaml#
   - if:
       anyOf:
         - required:

Documentation/devicetree/bindings/serial/8250_omap.yaml

@@ -0,0 +1,118 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/serial/8250_omap.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Bindings for 8250 compliant UARTs on TI's OMAP2+ and K3 SoCs
+
+maintainers:
+  - Vignesh Raghavendra <[email protected]>
+
+allOf:
+  - $ref: /schemas/serial/serial.yaml#
+  - $ref: /schemas/serial/rs485.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - ti,am3352-uart
+          - ti,am4372-uart
+          - ti,am654-uart
+          - ti,dra742-uart
+          - ti,omap2-uart
+          - ti,omap3-uart
+          - ti,omap4-uart
+      - items:
+          - enum:
+              - ti,am64-uart
+              - ti,j721e-uart
+          - const: ti,am654-uart
+
+  ti,hwmods:
+    description:
+      Must be "uart<n>", n being the instance number (1-based)
+      This property is applicable only on legacy platforms mainly omap2/3
+      and ti81xx and should not be used on other platforms.
+    $ref: /schemas/types.yaml#/definitions/string
+    deprecated: true
+
+  dmas:
+    minItems: 1
+    maxItems: 2
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    minItems: 1
+    maxItems: 2
+    description:
+      First entry is module IRQ required for normal IO operation.
+      Second entry is optional and corresponds to system wakeup IRQ
+      where supported.
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: fclk
+
+  rts-gpios: true
+  cts-gpios: true
+  dtr-gpios: true
+  dsr-gpios: true
+  rng-gpios: true
+  dcd-gpios: true
+  rs485-rts-delay: true
+  rs485-rts-active-low: true
+  rs485-rx-during-tx: true
+  rs485-rts-active-high: true
+  linux,rs485-enabled-at-boot-time: true
+  rts-gpio: true
+  power-domains: true
+  clock-frequency: true
+  current-speed: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+if:
+  properties:
+    compatible:
+      oneOf:
+        - const: ti,omap2-uart
+        - const: ti,omap3-uart
+        - const: ti,omap4-uart
+
+then:
+  properties:
+    ti,hwmods:
+      items:
+        - pattern: "^uart([1-9])$"
+
+else:
+  properties:
+    ti,hwmods: false
+
+examples:
+  - |
+          serial@49042000 {
+            compatible = "ti,omap3-uart";
+            reg = <0x49042000 0x400>;
+            interrupts = <80>;
+            dmas = <&sdma 81 &sdma 82>;
+            dma-names = "tx", "rx";
+            ti,hwmods = "uart4";
+            clock-frequency = <48000000>;
+          };

Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml

@@ -55,6 +55,11 @@ properties:
       - const: pclk
       - const: baud
 
+  fifo-size:
+    description: The fifo size supported by the UART channel.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [64, 128]
+
 required:
   - compatible
   - reg

Documentation/devicetree/bindings/serial/brcm,bcm7271-uart.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Al Cooper <[email protected]>
 
 allOf:
-  - $ref: /schemas/serial.yaml#
+  - $ref: serial.yaml#
 
 description: |+
   The Broadcom UART is based on the basic 8250 UART but with

Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml

@@ -71,6 +71,18 @@ properties:
       received, and that the peripheral should invert its input using the
       INVR registers.
 
+  fsl,dma-info:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    minItems: 2
+    maxItems: 2
+    description: |
+      First cell contains the size of DMA buffer chunks, second cell contains
+      the amount of chunks used for the device. Multiplying both numbers is
+      the total size of memory used for receiving data.
+      When not being configured the system will use default settings, which
+      are sensible for most use cases. If you need low latency processing on
+      slow connections this needs to be configured appropriately.
+
   uart-has-rtscts: true
 
   rs485-rts-delay: true

Documentation/devicetree/bindings/serial/ingenic,uart.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Paul Cercueil <[email protected]>
 
 allOf:
-  - $ref: /schemas/serial.yaml#
+  - $ref: serial.yaml#
 
 properties:
   $nodename:

Documentation/devicetree/bindings/serial/mvebu-uart.txt

@@ -5,10 +5,10 @@ Required properties:
 - compatible:
     - "marvell,armada-3700-uart" for the standard variant of the UART
       (32 bytes FIFO, no DMA, level interrupts, 8-bit access to the
-      FIFO, baudrate limited to 230400).
+      FIFO), called also UART1.
     - "marvell,armada-3700-uart-ext" for the extended variant of the
       UART (128 bytes FIFO, DMA, front interrupts, 8-bit or 32-bit
-      accesses to the FIFO, baudrate unlimited by the dividers).
+      accesses to the FIFO), called also UART2.
 - reg: offset and length of the register set for the device.
 - clocks: UART reference clock used to derive the baudrate. If no clock
       is provided (possible only with the "marvell,armada-3700-uart"
@@ -33,7 +33,7 @@ Required properties:
 Example:
 	uart0: serial@12000 {
 		compatible = "marvell,armada-3700-uart";
-		reg = <0x12000 0x200>;
+		reg = <0x12000 0x18>;
 		clocks = <&xtalclk>;
 		interrupts =
 		<GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,

Documentation/devicetree/bindings/serial/pl011.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Rob Herring <[email protected]>
 
 allOf:
-  - $ref: /schemas/serial.yaml#
+  - $ref: serial.yaml#
 
 # Need a custom select here or 'arm,primecell' will match on lots of nodes
 select:
@@ -24,12 +24,9 @@ select:
 
 properties:
   compatible:
-    oneOf:
-      - items:
-          - const: arm,pl011
-          - const: arm,primecell
-      - items:
-          - const: arm,primecell
+    items:
+      - const: arm,pl011
+      - const: arm,primecell
 
   reg:
     maxItems: 1
@@ -103,7 +100,7 @@ dependencies:
   poll-rate-ms: [ auto-poll ]
   poll-timeout-ms: [ auto-poll ]
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/serial/qca,ar9330-uart.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Oleksij Rempel <[email protected]>
 
 allOf:
-  - $ref: /schemas/serial.yaml#
+  - $ref: serial.yaml#
 
 properties:
   compatible:
@@ -35,7 +35,7 @@ required:
   - clocks
   - clock-names
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/serial/renesas,em-uart.yaml

@@ -35,7 +35,7 @@ required:
   - clocks
   - clock-names
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/serial/renesas,scif.yaml

@@ -64,6 +64,10 @@ properties:
           - const: renesas,rcar-gen3-scif # R-Car Gen3 and RZ/G2
           - const: renesas,scif           # generic SCIF compatible UART
 
+      - items:
+          - enum:
+              - renesas,scif-r9a07g044      # RZ/G2{L,LC}
+
   reg:
     maxItems: 1
 

Documentation/devicetree/bindings/serial/samsung_uart.yaml

@@ -81,7 +81,7 @@ required:
 unevaluatedProperties: false
 
 allOf:
-  - $ref: /schemas/serial.yaml#
+  - $ref: serial.yaml#
 
   - if:
       properties:

Documentation/devicetree/bindings/serial/serial.yaml

@@ -23,6 +23,8 @@ properties:
   $nodename:
     pattern: "^serial(@.*)?$"
 
+  label: true
+
   cts-gpios:
     maxItems: 1
     description:

Documentation/devicetree/bindings/serial/sifive-serial.yaml

@@ -12,7 +12,7 @@ maintainers:
   - Palmer Dabbelt <[email protected]>
 
 allOf:
-  - $ref: /schemas/serial.yaml#
+  - $ref: serial.yaml#
 
 properties:
   compatible:
@@ -49,7 +49,7 @@ required:
   - interrupts
   - clocks
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Rob Herring <[email protected]>
 
 allOf:
-  - $ref: /schemas/serial.yaml#
+  - $ref: serial.yaml#
 
 properties:
   compatible:
@@ -23,6 +23,7 @@ properties:
       - items:
           - enum:
               - rockchip,px30-uart
+              - rockchip,rk1808-uart
               - rockchip,rk3036-uart
               - rockchip,rk3066-uart
               - rockchip,rk3188-uart
@@ -31,6 +32,7 @@ properties:
               - rockchip,rk3328-uart
               - rockchip,rk3368-uart
               - rockchip,rk3399-uart
+              - rockchip,rk3568-uart
               - rockchip,rv1108-uart
           - const: snps,dw-apb-uart
       - items:

Documentation/devicetree/bindings/serial/st,stm32-uart.yaml

@@ -112,8 +112,7 @@ required:
   - interrupts
   - clocks
 
-additionalProperties:
-  type: object
+unevaluatedProperties: false
 
 examples:
   - |