Merge tag 'tty-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty / serial driver updates from Greg KH:
 "Here is the big set of TTY/Serial driver updates and cleanups for
  6.9-rc1. Included in here are:

   - more tty cleanups from Jiri

   - loads of 8250 driver cleanups from Andy

   - max310x driver updates

   - samsung serial driver updates

   - uart_prepare_sysrq_char() updates for many drivers

   - platform driver remove callback void cleanups

   - stm32 driver updates

   - other small tty/serial driver updates

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

* tag 'tty-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (199 commits)
  dt-bindings: serial: stm32: add power-domains property
  serial: 8250_dw: Replace ACPI device check by a quirk
  serial: Lock console when calling into driver before registration
  serial: 8250_uniphier: Switch to use uart_read_port_properties()
  serial: 8250_tegra: Switch to use uart_read_port_properties()
  serial: 8250_pxa: Switch to use uart_read_port_properties()
  serial: 8250_omap: Switch to use uart_read_port_properties()
  serial: 8250_of: Switch to use uart_read_port_properties()
  serial: 8250_lpc18xx: Switch to use uart_read_port_properties()
  serial: 8250_ingenic: Switch to use uart_read_port_properties()
  serial: 8250_dw: Switch to use uart_read_port_properties()
  serial: 8250_bcm7271: Switch to use uart_read_port_properties()
  serial: 8250_bcm2835aux: Switch to use uart_read_port_properties()
  serial: 8250_aspeed_vuart: Switch to use uart_read_port_properties()
  serial: port: Introduce a common helper to read properties
  serial: core: Add UPIO_UNKNOWN constant for unknown port type
  serial: core: Move struct uart_port::quirks closer to possible values
  serial: sh-sci: Call sci_serial_{in,out}() directly
  serial: core: only stop transmit when HW fifo is empty
  serial: pch: Use uart_prepare_sysrq_char().
  ...

9 files changed, 123 insertions, 19 deletions

diff --git a/Documentation/devicetree/bindings/serial/cdns,uart.yaml b/Documentation/devicetree/bindings/serial/cdns,uart.yaml
index e35ad1109efc8b..2129247d7c816d 100644
--- a/Documentation/devicetree/bindings/serial/cdns,uart.yaml
+++ b/Documentation/devicetree/bindings/serial/cdns,uart.yaml
@@ -55,6 +55,7 @@ required:
 
 allOf:
   - $ref: serial.yaml#
+  - $ref: rs485.yaml#
   - if:
       properties:
         compatible:
diff --git a/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml b/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml
index 3a5b59f5d3e35d..3f9ace89dee902 100644
--- a/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml
+++ b/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml
@@ -30,6 +30,7 @@ properties:
       - items:
           - enum:
               - fsl,imx93-lpuart
+              - fsl,imx95-lpuart
           - const: fsl,imx8ulp-lpuart
           - const: fsl,imx7ulp-lpuart
       - items:
diff --git a/Documentation/devicetree/bindings/serial/renesas,hscif.yaml b/Documentation/devicetree/bindings/serial/renesas,hscif.yaml
index 2046e2dc0a3d19..9480ed30915c9c 100644
--- a/Documentation/devicetree/bindings/serial/renesas,hscif.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,hscif.yaml
@@ -59,6 +59,7 @@ properties:
               - renesas,hscif-r8a779a0     # R-Car V3U
               - renesas,hscif-r8a779f0     # R-Car S4-8
               - renesas,hscif-r8a779g0     # R-Car V4H
+              - renesas,hscif-r8a779h0     # R-Car V4M
           - const: renesas,rcar-gen4-hscif # R-Car Gen4
           - const: renesas,hscif           # generic HSCIF compatible UART
 
diff --git a/Documentation/devicetree/bindings/serial/samsung_uart.yaml b/Documentation/devicetree/bindings/serial/samsung_uart.yaml
index 133259ed3a34c5..0f0131026911cd 100644
--- a/Documentation/devicetree/bindings/serial/samsung_uart.yaml
+++ b/Documentation/devicetree/bindings/serial/samsung_uart.yaml
@@ -143,6 +143,8 @@ allOf:
     then:
       required:
         - samsung,uart-fifosize
+      properties:
+        reg-io-width: false
 
 unevaluatedProperties: false
 
diff --git a/Documentation/devicetree/bindings/serial/serial.yaml b/Documentation/devicetree/bindings/serial/serial.yaml
index 65804ca274ae75..ffc9198ae21469 100644
--- a/Documentation/devicetree/bindings/serial/serial.yaml
+++ b/Documentation/devicetree/bindings/serial/serial.yaml
@@ -88,7 +88,7 @@ properties:
       TX FIFO threshold configuration (in bytes).
 
 patternProperties:
-  "^(bluetooth|bluetooth-gnss|gnss|gps|mcu)$":
+  "^(bluetooth|bluetooth-gnss|gnss|gps|mcu|onewire)$":
     if:
       type: object
     then:
diff --git a/Documentation/devicetree/bindings/serial/st,asc.yaml b/Documentation/devicetree/bindings/serial/st,asc.yaml
new file mode 100644
index 00000000000000..f2083388f36b48
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/st,asc.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/serial/st,asc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics STi SoCs Serial Port
+
+maintainers:
+  - Patrice Chotard <patrice.chotard@foss.st.com>
+
+allOf:
+  - $ref: serial.yaml#
+
+properties:
+  compatible:
+    const: st,asc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  st,hw-flow-ctrl:
+    description: When set, enable hardware flow control.
+    type: boolean
+
+  st,force-m1:
+    description: When set, force asc to be in Mode-1. This is recommended for
+      high bit rates above 19.2K.
+    type: boolean
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/stih407-clks.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    serial@9830000 {
+        compatible = "st,asc";
+        reg = <0x9830000 0x2c>;
+        interrupts = <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clk_s_c0_flexgen CLK_EXT2F_A9>;
+    };
+...
diff --git a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
index 1df8ffe95fc615..62f97da1b2fd7c 100644
--- a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
@@ -58,6 +58,9 @@ properties:
 
   wakeup-source: true
 
+  power-domains:
+    maxItems: 1
+
   rx-threshold:
     description:
       If value is set to 1, RX FIFO threshold is disabled.
diff --git a/Documentation/devicetree/bindings/serial/st-asc.txt b/Documentation/devicetree/bindings/serial/st-asc.txt
deleted file mode 100644
index a1b9b6f3490aab..00000000000000
--- a/Documentation/devicetree/bindings/serial/st-asc.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-*st-asc(Serial Port)
-
-Required properties:
-- compatible : Should be "st,asc".
-- reg, reg-names, interrupts, interrupt-names	: Standard way to define device
-			resources with names. look in
-			Documentation/devicetree/bindings/resource-names.txt
-
-Optional properties:
-- st,hw-flow-ctrl	bool flag to enable hardware flow control.
-- st,force-m1		bool flat to force asc to be in Mode-1 recommended
-			for high bit rates (above 19.2K)
-Example:
-serial@fe440000{
-    compatible    = "st,asc";
-    reg         = <0xfe440000 0x2c>;
-    interrupts     =  <0 209 0>;
-};
diff --git a/Documentation/devicetree/bindings/w1/w1-uart.yaml b/Documentation/devicetree/bindings/w1/w1-uart.yaml
new file mode 100644
index 00000000000000..bd7c62d780b82d
--- /dev/null
+++ b/Documentation/devicetree/bindings/w1/w1-uart.yaml
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/w1/w1-uart.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: UART 1-Wire Bus
+
+maintainers:
+  - Christoph Winklhofer <cj.winklhofer@gmail.com>
+
+description: |
+  UART 1-wire bus. Utilizes the UART interface via the Serial Device Bus
+  to create the 1-Wire timing patterns.
+
+  The UART peripheral must support full-duplex and operate in open-drain
+  mode. The timing patterns are generated by a specific combination of
+  baud-rate and transmitted byte, which corresponds to a 1-Wire read bit,
+  write bit or reset pulse.
+
+  The default baud-rate for reset and presence detection is 9600 and for
+  a 1-Wire read or write operation 115200. In case the actual baud-rate
+  is different from the requested one, the transmitted byte is adapted
+  to generate the 1-Wire timing patterns.
+
+  https://www.analog.com/en/technical-articles/using-a-uart-to-implement-a-1wire-bus-master.html
+
+properties:
+  compatible:
+    const: w1-uart
+
+  reset-bps:
+    default: 9600
+    description:
+      The baud rate for the 1-Wire reset and presence detect.
+
+  write-0-bps:
+    default: 115200
+    description:
+      The baud rate for the 1-Wire write-0 cycle.
+
+  write-1-bps:
+    default: 115200
+    description:
+      The baud rate for the 1-Wire write-1 and read cycle.
+
+required:
+  - compatible
+
+additionalProperties:
+  type: object
+
+examples:
+  - |
+    serial {
+        onewire {
+            compatible = "w1-uart";
+        };
+    };