Merge tag 'tty-6.3-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 serial and tty driver updates for 6.3-rc1.

  Once again, Jiri and Ilpo have done a number of core vt and tty/serial
  layer cleanups that were much needed and appreciated. Other than that,
  it's just a bunch of little tty/serial driver updates:

   - qcom-geni-serial driver updates

   - liteuart driver updates

   - hvcs driver cleanups

   - n_gsm updates and additions for new features

   - more 8250 device support added

   - fpga/dfl update and additions

   - imx serial driver updates

   - fsl_lpuart updates

   - other tiny fixes and updates for serial drivers

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

* tag 'tty-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (143 commits)
  tty: n_gsm: add keep alive support
  serial: imx: remove a redundant check
  dt-bindings: serial: snps-dw-apb-uart: add dma & dma-names properties
  soc: qcom: geni-se: Move qcom-geni-se.h to linux/soc/qcom/geni-se.h
  tty: n_gsm: add TIOCMIWAIT support
  tty: n_gsm: add RING/CD control support
  tty: n_gsm: mark unusable ioctl structure fields accordingly
  serial: imx: get rid of registers shadowing
  serial: imx: refine local variables in rxint()
  serial: imx: stop using USR2 in FIFO reading loop
  serial: imx: remove redundant USR2 read from FIFO reading loop
  serial: imx: do not break from FIFO reading loop prematurely
  serial: imx: do not sysrq broken chars
  serial: imx: work-around for hardware RX flood
  serial: imx: factor-out common code to imx_uart_soft_reset()
  serial: 8250_pci1xxxx: Add power management functions to quad-uart driver
  serial: 8250_pci1xxxx: Add RS485 support to quad-uart driver
  serial: 8250_pci1xxxx: Add driver for quad-uart support
  serial: 8250_pci: Add serial8250_pci_setup_port definition in 8250_pcilib.c
  tty: pcn_uart: fix memory leak with using debugfs_lookup()
  ...

23 files changed, 195 insertions, 152 deletions

diff --git a/Documentation/devicetree/bindings/serial/8250.yaml b/Documentation/devicetree/bindings/serial/8250.yaml
index 34b8e59aa9d4..c55865fd371a 100644
--- a/Documentation/devicetree/bindings/serial/8250.yaml
+++ b/Documentation/devicetree/bindings/serial/8250.yaml
@@ -62,7 +62,6 @@ properties:
       - const: mrvl,pxa-uart
       - const: nuvoton,wpcm450-uart
       - const: nuvoton,npcm750-uart
-      - const: nuvoton,npcm845-uart
       - const: nvidia,tegra20-uart
       - const: nxp,lpc3220-uart
       - items:
@@ -94,6 +93,10 @@ properties:
               - ns16550a
       - items:
           - enum:
+              - nuvoton,npcm845-uart
+          - const: nuvoton,npcm750-uart
+      - items:
+          - enum:
               - ralink,mt7620a-uart
               - ralink,rt3052-uart
               - ralink,rt3883-uart
@@ -200,12 +203,13 @@ properties:
     deprecated: true
 
   aspeed,lpc-io-reg:
-    $ref: '/schemas/types.yaml#/definitions/uint32'
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    maxItems: 1
     description: |
       The VUART LPC address.  Only applicable to aspeed,ast2500-vuart.
 
   aspeed,lpc-interrupts:
-    $ref: "/schemas/types.yaml#/definitions/uint32-array"
+    $ref: /schemas/types.yaml#/definitions/uint32-array
     minItems: 2
     maxItems: 2
     description: |
diff --git a/Documentation/devicetree/bindings/serial/8250_omap.yaml b/Documentation/devicetree/bindings/serial/8250_omap.yaml
index 53dc1212ad2e..eb3488d8f9ee 100644
--- a/Documentation/devicetree/bindings/serial/8250_omap.yaml
+++ b/Documentation/devicetree/bindings/serial/8250_omap.yaml
@@ -70,11 +70,6 @@ properties:
   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
@@ -109,12 +104,12 @@ else:
 
 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>;
-          };
+    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>;
+    };
diff --git a/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml b/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
index 7822705ad16c..3cbdde85ed71 100644
--- a/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
@@ -19,6 +19,9 @@ description: |
   is active since power-on and does not need any clock gating and is usable
   as very early serial console.
 
+allOf:
+  - $ref: serial.yaml#
+
 properties:
   compatible:
     oneOf:
@@ -69,14 +72,14 @@ required:
   - clocks
   - clock-names
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |
     serial@84c0 {
-          compatible = "amlogic,meson-gx-uart";
-          reg = <0x84c0 0x14>;
-          interrupts = <26>;
-          clocks = <&xtal>, <&pclk>, <&xtal>;
-          clock-names = "xtal", "pclk", "baud";
+        compatible = "amlogic,meson-gx-uart";
+        reg = <0x84c0 0x14>;
+        interrupts = <26>;
+        clocks = <&xtal>, <&pclk>, <&xtal>;
+        clock-names = "xtal", "pclk", "baud";
     };
diff --git a/Documentation/devicetree/bindings/serial/cdns,uart.yaml b/Documentation/devicetree/bindings/serial/cdns,uart.yaml
index 876b8cf1cafb..a8b323d7bf94 100644
--- a/Documentation/devicetree/bindings/serial/cdns,uart.yaml
+++ b/Documentation/devicetree/bindings/serial/cdns,uart.yaml
@@ -9,9 +9,6 @@ title: Cadence UART Controller
 maintainers:
   - Michal Simek <michal.simek@xilinx.com>
 
-allOf:
-  - $ref: /schemas/serial.yaml#
-
 properties:
   compatible:
     oneOf:
@@ -46,6 +43,9 @@ properties:
       port does not use this pin.
     type: boolean
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg
@@ -53,14 +53,25 @@ required:
   - clocks
   - clock-names
 
+allOf:
+  - $ref: serial.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: cdns,uart-r1p8
+    then:
+      properties:
+        power-domains: false
+
 unevaluatedProperties: false
 
 examples:
   - |
     uart0: serial@e0000000 {
-      compatible = "xlnx,xuartps", "cdns,uart-r1p8";
-      clocks = <&clkc 23>, <&clkc 40>;
-      clock-names = "uart_clk", "pclk";
-      reg = <0xE0000000 0x1000>;
-      interrupts = <0 27 4>;
+        compatible = "xlnx,xuartps", "cdns,uart-r1p8";
+        clocks = <&clkc 23>, <&clkc 40>;
+        clock-names = "uart_clk", "pclk";
+        reg = <0xe0000000 0x1000>;
+        interrupts = <0 27 4>;
     };
diff --git a/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml b/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml
index 8b643bae3c7b..920539926d7e 100644
--- a/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml
+++ b/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml
@@ -16,7 +16,7 @@ maintainers:
   - Chester Lin <clin@suse.com>
 
 allOf:
-  - $ref: "serial.yaml"
+  - $ref: serial.yaml#
 
 properties:
   compatible:
diff --git a/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml b/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml
index 9d949296a142..4cbe76e1715b 100644
--- a/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml
@@ -10,8 +10,8 @@ maintainers:
   - Fabio Estevam <festevam@gmail.com>
 
 allOf:
-  - $ref: "serial.yaml"
-  - $ref: "rs485.yaml"
+  - $ref: serial.yaml#
+  - $ref: rs485.yaml#
 
 properties:
   compatible:
@@ -83,13 +83,6 @@ properties:
       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
-  rs485-rts-active-low: true
-  rs485-rx-during-tx: true
-  linux,rs485-enabled-at-boot-time: true
-
 required:
   - compatible
   - reg
diff --git a/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml b/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml
index 74f75f669e77..ab81722293d3 100644
--- a/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml
+++ b/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml
@@ -10,7 +10,8 @@ maintainers:
   - Fugang Duan <fugang.duan@nxp.com>
 
 allOf:
-  - $ref: "rs485.yaml"
+  - $ref: rs485.yaml#
+  - $ref: serial.yaml#
 
 properties:
   compatible:
@@ -64,9 +65,6 @@ properties:
       - const: rx
       - const: tx
 
-  rs485-rts-active-low: true
-  linux,rs485-enabled-at-boot-time: true
-
 required:
   - compatible
   - reg
diff --git a/Documentation/devicetree/bindings/serial/fsl-mxs-auart.yaml b/Documentation/devicetree/bindings/serial/fsl-mxs-auart.yaml
index 14c7594c88c6..6a400a5e6fc7 100644
--- a/Documentation/devicetree/bindings/serial/fsl-mxs-auart.yaml
+++ b/Documentation/devicetree/bindings/serial/fsl-mxs-auart.yaml
@@ -10,7 +10,7 @@ maintainers:
   - Fabio Estevam <festevam@gmail.com>
 
 allOf:
-  - $ref: "serial.yaml"
+  - $ref: serial.yaml#
 
 properties:
   compatible:
diff --git a/Documentation/devicetree/bindings/serial/pl011.yaml b/Documentation/devicetree/bindings/serial/pl011.yaml
index 80af72859876..9571041030b7 100644
--- a/Documentation/devicetree/bindings/serial/pl011.yaml
+++ b/Documentation/devicetree/bindings/serial/pl011.yaml
@@ -10,6 +10,7 @@ maintainers:
   - Rob Herring <robh@kernel.org>
 
 allOf:
+  - $ref: /schemas/arm/primecell.yaml#
   - $ref: serial.yaml#
 
 # Need a custom select here or 'arm,primecell' will match on lots of nodes
diff --git a/Documentation/devicetree/bindings/serial/qcom,msm-uart.txt b/Documentation/devicetree/bindings/serial/qcom,msm-uart.txt
deleted file mode 100644
index ce8c90161959..000000000000
--- a/Documentation/devicetree/bindings/serial/qcom,msm-uart.txt
+++ /dev/null
@@ -1,25 +0,0 @@
-* MSM Serial UART
-
-The MSM serial UART hardware is designed for low-speed use cases where a
-dma-engine isn't needed. From a software perspective it's mostly compatible
-with the MSM serial UARTDM except that it only supports reading and writing one
-character at a time.
-
-Required properties:
-- compatible: Should contain "qcom,msm-uart"
-- reg: Should contain UART register location and length.
-- interrupts: Should contain UART interrupt.
-- clocks: Should contain the core clock.
-- clock-names: Should be "core".
-
-Example:
-
-A uart device at 0xa9c00000 with interrupt 11.
-
-serial@a9c00000 {
-	compatible = "qcom,msm-uart";
-	reg = <0xa9c00000 0x1000>;
-	interrupts = <11>;
-	clocks = <&uart_cxc>;
-	clock-names = "core";
-};
diff --git a/Documentation/devicetree/bindings/serial/qcom,msm-uart.yaml b/Documentation/devicetree/bindings/serial/qcom,msm-uart.yaml
new file mode 100644
index 000000000000..a052aaef21f4
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/qcom,msm-uart.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/serial/qcom,msm-uart.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm MSM SoC Serial UART
+
+maintainers:
+  - Bjorn Andersson <andersson@kernel.org>
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+
+description:
+  The MSM serial UART hardware is designed for low-speed use cases where a
+  dma-engine isn't needed. From a software perspective it's mostly compatible
+  with the MSM serial UARTDM except that it only supports reading and writing
+  one character at a time.
+
+properties:
+  compatible:
+    const: qcom,msm-uart
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: core
+
+  interrupts:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - clock-names
+  - clocks
+  - interrupts
+  - reg
+
+unevaluatedProperties: false
+
+allOf:
+  - $ref: /schemas/serial/serial.yaml#
+
+examples:
+  - |
+    serial@a9c00000 {
+        compatible = "qcom,msm-uart";
+        reg = <0xa9c00000 0x1000>;
+        interrupts = <11>;
+        clocks = <&uart_cxc>;
+        clock-names = "core";
+    };
diff --git a/Documentation/devicetree/bindings/serial/renesas,em-uart.yaml b/Documentation/devicetree/bindings/serial/renesas,em-uart.yaml
index b25aca733b72..12d0fa34f9f9 100644
--- a/Documentation/devicetree/bindings/serial/renesas,em-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,em-uart.yaml
@@ -66,9 +66,9 @@ examples:
   - |
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     uart0: serial@e1020000 {
-            compatible = "renesas,em-uart";
-            reg = <0xe1020000 0x38>;
-            interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
-            clocks = <&usia_u0_sclk>;
-            clock-names = "sclk";
+        compatible = "renesas,em-uart";
+        reg = <0xe1020000 0x38>;
+        interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&usia_u0_sclk>;
+        clock-names = "sclk";
     };
diff --git a/Documentation/devicetree/bindings/serial/renesas,hscif.yaml b/Documentation/devicetree/bindings/serial/renesas,hscif.yaml
index 1957b9d782e8..afedb6edfc34 100644
--- a/Documentation/devicetree/bindings/serial/renesas,hscif.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,hscif.yaml
@@ -131,20 +131,20 @@ examples:
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     #include <dt-bindings/power/r8a7795-sysc.h>
     aliases {
-            serial1 = &hscif1;
+        serial1 = &hscif1;
     };
 
     hscif1: serial@e6550000 {
-            compatible = "renesas,hscif-r8a7795", "renesas,rcar-gen3-hscif",
-                         "renesas,hscif";
-            reg = <0xe6550000 96>;
-            interrupts = <GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>;
-            clocks = <&cpg CPG_MOD 519>, <&cpg CPG_CORE R8A7795_CLK_S3D1>,
-                     <&scif_clk>;
-            clock-names = "fck", "brg_int", "scif_clk";
-            dmas = <&dmac1 0x33>, <&dmac1 0x32>, <&dmac2 0x33>, <&dmac2 0x32>;
-            dma-names = "tx", "rx", "tx", "rx";
-            power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
-            resets = <&cpg 519>;
-            uart-has-rtscts;
+        compatible = "renesas,hscif-r8a7795", "renesas,rcar-gen3-hscif",
+                     "renesas,hscif";
+        reg = <0xe6550000 96>;
+        interrupts = <GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&cpg CPG_MOD 519>, <&cpg CPG_CORE R8A7795_CLK_S3D1>,
+                 <&scif_clk>;
+        clock-names = "fck", "brg_int", "scif_clk";
+        dmas = <&dmac1 0x33>, <&dmac1 0x32>, <&dmac2 0x33>, <&dmac2 0x32>;
+        dma-names = "tx", "rx", "tx", "rx";
+        power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
+        resets = <&cpg 519>;
+        uart-has-rtscts;
     };
diff --git a/Documentation/devicetree/bindings/serial/renesas,sci.yaml b/Documentation/devicetree/bindings/serial/renesas,sci.yaml
index bf7708a7a2c0..dc445b327e0b 100644
--- a/Documentation/devicetree/bindings/serial/renesas,sci.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,sci.yaml
@@ -91,19 +91,19 @@ examples:
     #include <dt-bindings/interrupt-controller/arm-gic.h>
 
     aliases {
-            serial0 = &sci0;
+        serial0 = &sci0;
     };
 
     sci0: serial@1004d000 {
-            compatible = "renesas,r9a07g044-sci", "renesas,sci";
-            reg = <0x1004d000 0x400>;
-            interrupts = <GIC_SPI 405 IRQ_TYPE_LEVEL_HIGH>,
-                         <GIC_SPI 406 IRQ_TYPE_LEVEL_HIGH>,
-                         <GIC_SPI 407 IRQ_TYPE_LEVEL_HIGH>,
-                         <GIC_SPI 408 IRQ_TYPE_LEVEL_HIGH>;
-            interrupt-names = "eri", "rxi", "txi", "tei";
-            clocks = <&cpg CPG_MOD R9A07G044_SCI0_CLKP>;
-            clock-names = "fck";
-            power-domains = <&cpg>;
-            resets = <&cpg R9A07G044_SCI0_RST>;
+        compatible = "renesas,r9a07g044-sci", "renesas,sci";
+        reg = <0x1004d000 0x400>;
+        interrupts = <GIC_SPI 405 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 406 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 407 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 408 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "eri", "rxi", "txi", "tei";
+        clocks = <&cpg CPG_MOD R9A07G044_SCI0_CLKP>;
+        clock-names = "fck";
+        power-domains = <&cpg>;
+        resets = <&cpg R9A07G044_SCI0_RST>;
     };
diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
index f81f2d67a1ed..1989bd67d04e 100644
--- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
@@ -180,19 +180,19 @@ examples:
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     #include <dt-bindings/power/r8a7791-sysc.h>
     aliases {
-            serial0 = &scif0;
+        serial0 = &scif0;
     };
 
     scif0: serial@e6e60000 {
-            compatible = "renesas,scif-r8a7791", "renesas,rcar-gen2-scif",
-                         "renesas,scif";
-            reg = <0xe6e60000 64>;
-            interrupts = <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>;
-            clocks = <&cpg CPG_MOD 721>, <&cpg CPG_CORE R8A7791_CLK_ZS>,
-                     <&scif_clk>;
-            clock-names = "fck", "brg_int", "scif_clk";
-            dmas = <&dmac0 0x29>, <&dmac0 0x2a>, <&dmac1 0x29>, <&dmac1 0x2a>;
-            dma-names = "tx", "rx", "tx", "rx";
-            power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
-            resets = <&cpg 721>;
+        compatible = "renesas,scif-r8a7791", "renesas,rcar-gen2-scif",
+                     "renesas,scif";
+        reg = <0xe6e60000 64>;
+        interrupts = <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&cpg CPG_MOD 721>, <&cpg CPG_CORE R8A7791_CLK_ZS>,
+                 <&scif_clk>;
+        clock-names = "fck", "brg_int", "scif_clk";
+        dmas = <&dmac0 0x29>, <&dmac0 0x2a>, <&dmac1 0x29>, <&dmac1 0x2a>;
+        dma-names = "tx", "rx", "tx", "rx";
+        power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
+        resets = <&cpg 721>;
     };
diff --git a/Documentation/devicetree/bindings/serial/renesas,scifa.yaml b/Documentation/devicetree/bindings/serial/renesas,scifa.yaml
index 3c67d3202e1b..4c3b5e7270da 100644
--- a/Documentation/devicetree/bindings/serial/renesas,scifa.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,scifa.yaml
@@ -95,18 +95,18 @@ examples:
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     #include <dt-bindings/power/r8a7790-sysc.h>
     aliases {
-            serial0 = &scifa0;
+        serial0 = &scifa0;
     };
 
     scifa0: serial@e6c40000 {
-            compatible = "renesas,scifa-r8a7790", "renesas,rcar-gen2-scifa",
-                         "renesas,scifa";
-            reg = <0xe6c40000 64>;
-            interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>;
-            clocks = <&cpg CPG_MOD 204>;
-            clock-names = "fck";
-            power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
-            resets = <&cpg 204>;
-            dmas = <&dmac0 0x21>, <&dmac0 0x22>, <&dmac1 0x21>, <&dmac1 0x22>;
-            dma-names = "tx", "rx", "tx", "rx";
+        compatible = "renesas,scifa-r8a7790", "renesas,rcar-gen2-scifa",
+                     "renesas,scifa";
+        reg = <0xe6c40000 64>;
+        interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&cpg CPG_MOD 204>;
+        clock-names = "fck";
+        power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
+        resets = <&cpg 204>;
+        dmas = <&dmac0 0x21>, <&dmac0 0x22>, <&dmac1 0x21>, <&dmac1 0x22>;
+        dma-names = "tx", "rx", "tx", "rx";
     };
diff --git a/Documentation/devicetree/bindings/serial/renesas,scifb.yaml b/Documentation/devicetree/bindings/serial/renesas,scifb.yaml
index d5571c7a4424..2f7cbbb48960 100644
--- a/Documentation/devicetree/bindings/serial/renesas,scifb.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,scifb.yaml
@@ -94,10 +94,10 @@ examples:
     #include <dt-bindings/clock/r8a7740-clock.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     scifb: serial@e6c30000 {
-            compatible = "renesas,scifb-r8a7740", "renesas,scifb";
-            reg = <0xe6c30000 0x100>;
-            interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
-            clocks = <&mstp2_clks R8A7740_CLK_SCIFB>;
-            clock-names = "fck";
-            power-domains = <&pd_a3sp>;
+        compatible = "renesas,scifb-r8a7740", "renesas,scifb";
+        reg = <0xe6c30000 0x100>;
+        interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&mstp2_clks R8A7740_CLK_SCIFB>;
+        clock-names = "fck";
+        power-domains = <&pd_a3sp>;
     };
diff --git a/Documentation/devicetree/bindings/serial/rs485.yaml b/Documentation/devicetree/bindings/serial/rs485.yaml
index 789763cf427a..303a443d9e29 100644
--- a/Documentation/devicetree/bindings/serial/rs485.yaml
+++ b/Documentation/devicetree/bindings/serial/rs485.yaml
@@ -51,6 +51,12 @@ properties:
     description: GPIO pin to enable RS485 bus termination.
     maxItems: 1
 
+  rs485-rx-during-tx-gpios:
+    description: Output GPIO pin that sets the state of rs485-rx-during-tx. This
+      signal can be used to control the RX part of an RS485 transceiver. Thereby
+      the active state enables RX during TX.
+    maxItems: 1
+
 additionalProperties: true
 
 ...
diff --git a/Documentation/devicetree/bindings/serial/serial.yaml b/Documentation/devicetree/bindings/serial/serial.yaml
index 11e822bf09e2..e05ad3ac2abc 100644
--- a/Documentation/devicetree/bindings/serial/serial.yaml
+++ b/Documentation/devicetree/bindings/serial/serial.yaml
@@ -141,13 +141,13 @@ additionalProperties: true
 examples:
   - |
     serial@1234 {
-            compatible = "ns16550a";
-            reg = <0x1234 0x20>;
-            interrupts = <1>;
-
-            bluetooth {
-                    compatible = "brcm,bcm4330-bt";
-                    interrupt-parent = <&gpio>;
-                    interrupts = <10>;
-            };
+        compatible = "ns16550a";
+        reg = <0x1234 0x20>;
+        interrupts = <1>;
+
+        bluetooth {
+            compatible = "brcm,bcm4330-bt";
+            interrupt-parent = <&gpio>;
+            interrupts = <10>;
+        };
     };
diff --git a/Documentation/devicetree/bindings/serial/sifive-serial.yaml b/Documentation/devicetree/bindings/serial/sifive-serial.yaml
index b0a8871e3641..b0df1cac4968 100644
--- a/Documentation/devicetree/bindings/serial/sifive-serial.yaml
+++ b/Documentation/devicetree/bindings/serial/sifive-serial.yaml
@@ -53,13 +53,13 @@ unevaluatedProperties: false
 
 examples:
   - |
-      #include <dt-bindings/clock/sifive-fu540-prci.h>
-      serial@10010000 {
+    #include <dt-bindings/clock/sifive-fu540-prci.h>
+    serial@10010000 {
         compatible = "sifive,fu540-c000-uart", "sifive,uart0";
         interrupt-parent = <&plic0>;
         interrupts = <80>;
         reg = <0x10010000 0x1000>;
         clocks = <&prci FU540_PRCI_CLK_TLCLK>;
-      };
+    };
 
 ...
diff --git a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
index b9c2287c5d1e..2becdfab4f15 100644
--- a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
@@ -67,6 +67,14 @@ properties:
       - const: baudclk
       - const: apb_pclk
 
+  dmas:
+    minItems: 2
+
+  dma-names:
+    items:
+      - const: rx
+      - const: tx
+
   snps,uart-16550-compatible:
     description: reflects the value of UART_16550_COMPATIBLE configuration
       parameter. Define this if your UART does not implement the busy functionality.
diff --git a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
index 85876c668f6d..1df8ffe95fc6 100644
--- a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
@@ -35,8 +35,6 @@ properties:
     description: enable hardware flow control (deprecated)
     $ref: /schemas/types.yaml#/definitions/flag
 
-  uart-has-rtscts: true
-
   rx-tx-swap: true
 
   dmas:
@@ -60,11 +58,6 @@ properties:
 
   wakeup-source: true
 
-  rs485-rts-delay: true
-  rs485-rts-active-low: true
-  linux,rs485-enabled-at-boot-time: true
-  rs485-rx-during-tx: true
-
   rx-threshold:
     description:
       If value is set to 1, RX FIFO threshold is disabled.
diff --git a/Documentation/devicetree/bindings/serial/xlnx,opb-uartlite.yaml b/Documentation/devicetree/bindings/serial/xlnx,opb-uartlite.yaml
index 2f4390e8d4e8..08dcb275d8e2 100644
--- a/Documentation/devicetree/bindings/serial/xlnx,opb-uartlite.yaml
+++ b/Documentation/devicetree/bindings/serial/xlnx,opb-uartlite.yaml
@@ -63,7 +63,7 @@ required:
   - xlnx,use-parity
 
 allOf:
-  - $ref: /schemas/serial.yaml#
+  - $ref: serial.yaml#
   - if:
       properties:
         xlnx,use-parity:
@@ -76,7 +76,7 @@ unevaluatedProperties: false
 
 examples:
   - |
-      serial@800c0000 {
+    serial@800c0000 {
         compatible = "xlnx,xps-uartlite-1.00.a";
         reg = <0x800c0000 0x10000>;
         interrupts = <0x0 0x6e 0x1>;
@@ -84,5 +84,5 @@ examples:
         current-speed = <115200>;
         xlnx,data-bits = <8>;
         xlnx,use-parity = <0>;
-      };
+    };
 ...