support for Amlogic SPI Flash Controller IP

Merge series from Xianwei Zhao <xianwei.zhao@amlogic.com>:

This Flash Controller is derived by adding an SPI path to the original
raw NAND controller. This controller supports two modes: raw mode and
SPI mode. The raw mode has already been implemented in the community
(drivers/mtd/nand/raw/meson_nand.c).
This submission supports the SPI mode.

Add the drivers and bindings corresponding to the SPI Flash Controller.

Author: broonie

.mailmap

@@ -589,6 +589,7 @@ Nikolay Aleksandrov <razor@blackwall.org> <nikolay@redhat.com>
 Nikolay Aleksandrov <razor@blackwall.org> <nikolay@cumulusnetworks.com>
 Nikolay Aleksandrov <razor@blackwall.org> <nikolay@nvidia.com>
 Nikolay Aleksandrov <razor@blackwall.org> <nikolay@isovalent.com>
+Nobuhiro Iwamatsu <nobuhiro.iwamatsu.x90@mail.toshiba> <nobuhiro1.iwamatsu@toshiba.co.jp>
 Odelu Kukatla <quic_okukatla@quicinc.com> <okukatla@codeaurora.org>
 Oleksandr Natalenko <oleksandr@natalenko.name> <oleksandr@redhat.com>
 Oleksij Rempel <linux@rempel-privat.de> <bug-track@fisher-privat.net>

Documentation/devicetree/bindings/spi/amlogic,a4-spifc.yaml

@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2025 Amlogic, Inc. All rights reserved
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/amlogic,a4-spifc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SPI flash controller for Amlogic ARM SoCs
+
+maintainers:
+  - Liang Yang <liang.yang@amlogic.com>
+  - Feng Chen <feng.chen@amlogic.com>
+  - Xianwei Zhao <xianwei.zhao@amlogic.com>
+
+description:
+  The Amlogic SPI flash controller is an extended version of the Amlogic NAND
+  flash controller. It supports SPI Nor Flash and SPI NAND Flash(where the Host
+  ECC HW engine could be enabled).
+
+allOf:
+  - $ref: /schemas/spi/spi-controller.yaml#
+
+properties:
+  compatible:
+    const: amlogic,a4-spifc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: clock apb gate
+      - description: clock used for the controller
+
+  clock-names:
+    items:
+      - const: gate
+      - const: core
+
+  interrupts:
+    maxItems: 1
+
+  amlogic,rx-adj:
+    description:
+      Number of clock cycles by which sampling is delayed.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 2, 3]
+    default: 0
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    sfc0: spi@fe08d000 {
+      compatible = "amlogic,a4-spifc";
+      reg = <0xfe08d000 0x800>;
+      clocks = <&clkc_periphs 31>,
+               <&clkc_periphs 102>;
+      clock-names = "gate", "core";
+
+      pinctrl-0 = <&spiflash_default>;
+      pinctrl-names = "default";
+
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      flash@0 {
+          compatible = "spi-nand";
+          reg = <0>;
+          #address-cells = <1>;
+          #size-cells = <1>;
+          nand-ecc-engine = <&sfc0>;
+          nand-ecc-strength = <8>;
+          nand-ecc-step-size = <512>;
+      };
+    };

Documentation/networking/napi.rst

@@ -433,9 +433,8 @@ Threaded NAPI
 
 Threaded NAPI is an operating mode that uses dedicated kernel
 threads rather than software IRQ context for NAPI processing.
-The configuration is per netdevice and will affect all
-NAPI instances of that device. Each NAPI instance will spawn a separate
-thread (called ``napi/${ifc-name}-${napi-id}``).
+Each threaded NAPI instance will spawn a separate thread
+(called ``napi/${ifc-name}-${napi-id}``).
 
 It is recommended to pin each kernel thread to a single CPU, the same
 CPU as the CPU which services the interrupt. Note that the mapping

Documentation/sound/alsa-configuration.rst

@@ -2253,8 +2253,15 @@ device_setup
     Default: 0x0000 
 ignore_ctl_error
     Ignore any USB-controller regarding mixer interface (default: no)
+    ``ignore_ctl_error=1`` may help when you get an error at accessing
+    the mixer element such as URB error -22.  This happens on some
+    buggy USB device or the controller.  This workaround corresponds to
+    the ``quirk_flags`` bit 14, too.
 autoclock
     Enable auto-clock selection for UAC2 devices (default: yes)
+lowlatency
+    Enable low latency playback mode (default: yes).
+    Could disable it to switch back to the old mode if face a regression.
 quirk_alias
     Quirk alias list, pass strings like ``0123abcd:5678beef``, which
     applies the existing quirk for the device 5678:beef to a new
@@ -2284,6 +2291,11 @@ delayed_register
     The driver prints a message like "Found post-registration device
     assignment: 1234abcd:04" for such a device, so that user can
     notice the need.
+skip_validation
+    Skip unit descriptor validation (default: no).
+    The option is used to ignores the validation errors with the hexdump
+    of the unit descriptor instead of a driver probe error, so that we
+    can check its details.
 quirk_flags
     Contains the bit flags for various device specific workarounds.
     Applied to the corresponding card index.
@@ -2307,17 +2319,26 @@ quirk_flags
         * bit 16: Set up the interface at first like UAC1
         * bit 17: Apply the generic implicit feedback sync mode
         * bit 18: Don't apply implicit feedback sync mode
+        * bit 19: Don't closed interface during setting sample rate
+        * bit 20: Force an interface reset whenever stopping & restarting
+          a stream
+        * bit 21: Do not set PCM rate (frequency) when only one rate is
+          available for the given endpoint.
+        * bit 22: Set the fixed resolution 16 for Mic Capture Volume
+        * bit 23: Set the fixed resolution 384 for Mic Capture Volume
+        * bit 24: Set minimum volume control value as mute for devices
+          where the lowest playback value represents muted state instead
+          of minimum audible volume
 
 This module supports multiple devices, autoprobe and hotplugging.
 
 NB: ``nrpacks`` parameter can be modified dynamically via sysfs.
 Don't put the value over 20.  Changing via sysfs has no sanity
 check.
 
-NB: ``ignore_ctl_error=1`` may help when you get an error at accessing
-the mixer element such as URB error -22.  This happens on some
-buggy USB device or the controller.  This workaround corresponds to
-the ``quirk_flags`` bit 14, too.
+NB: ``ignore_ctl_error=1`` just provides a quick way to work around the
+issues.  If you have a buggy device that requires these quirks, please
+report it to the upstream.
 
 NB: ``quirk_alias`` option is provided only for testing / development.
 If you want to have a proper support, contact to upstream for

MAINTAINERS

@@ -1318,6 +1318,16 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/rtc/amlogic,a4-rtc.yaml
 F:	drivers/rtc/rtc-amlogic-a4.c
 
+AMLOGIC SPIFC DRIVER
+M:	Liang Yang <liang.yang@amlogic.com>
+M:	Feng Chen <feng.chen@amlogic.com>
+M:	Xianwei Zhao <xianwei.zhao@amlogic.com>
+L:	linux-amlogic@lists.infradead.org
+L:	linux-spi@vger.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/spi/amlogic,a4-spifc.yaml
+F:	drivers/spi/spi-amlogic-spifc-a4.c
+
 AMLOGIC SPISG DRIVER
 M:	Sunny Luo <sunny.luo@amlogic.com>
 M:	Xianwei Zhao <xianwei.zhao@amlogic.com>
@@ -3526,7 +3536,7 @@ F:	Documentation/devicetree/bindings/arm/ti/nspire.yaml
 F:	arch/arm/boot/dts/nspire/
 
 ARM/TOSHIBA VISCONTI ARCHITECTURE
-M:	Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
+M:	Nobuhiro Iwamatsu <nobuhiro.iwamatsu.x90@mail.toshiba>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Supported
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/iwamatsu/linux-visconti.git
@@ -3667,6 +3677,7 @@ F:	drivers/virt/coco/arm-cca-guest/
 F:	drivers/virt/coco/pkvm-guest/
 F:	tools/testing/selftests/arm64/
 X:	arch/arm64/boot/dts/
+X:	arch/arm64/configs/defconfig
 
 ARROW SPEEDCHIPS XRS7000 SERIES ETHERNET SWITCH DRIVER
 M:	George McCollister <george.mccollister@gmail.com>
@@ -7820,7 +7831,7 @@ Q:	https://patchwork.freedesktop.org/project/nouveau/
 Q:	https://gitlab.freedesktop.org/drm/nouveau/-/merge_requests
 B:	https://gitlab.freedesktop.org/drm/nouveau/-/issues
 C:	irc://irc.oftc.net/nouveau
-T:	git https://gitlab.freedesktop.org/drm/nouveau.git
+T:	git https://gitlab.freedesktop.org/drm/misc/kernel.git
 F:	drivers/gpu/drm/nouveau/
 F:	include/uapi/drm/nouveau_drm.h
 
@@ -10388,7 +10399,7 @@ S:	Maintained
 F:	drivers/input/touchscreen/goodix*
 
 GOOGLE ETHERNET DRIVERS
-M:	Jeroen de Borst <jeroendb@google.com>
+M:	Joshua Washington <joshwash@google.com>
 M:	Harshitha Ramamurthy <hramamurthy@google.com>
 L:	netdev@vger.kernel.org
 S:	Maintained
@@ -17850,6 +17861,7 @@ F:	net/ipv6/tcp*.c
 NETWORKING [TLS]
 M:	John Fastabend <john.fastabend@gmail.com>
 M:	Jakub Kicinski <kuba@kernel.org>
+M:	Sabrina Dubroca <sd@queasysnail.net>
 L:	netdev@vger.kernel.org
 S:	Maintained
 F:	include/net/tls.h
@@ -24252,6 +24264,12 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/input/allwinner,sun4i-a10-lradc-keys.yaml
 F:	drivers/input/keyboard/sun4i-lradc-keys.c
 
+SUNDANCE NETWORK DRIVER
+M:	Denis Kirjanov <dkirjanov@suse.de>
+L:	netdev@vger.kernel.org
+S:	Maintained
+F:	drivers/net/ethernet/dlink/sundance.c
+
 SUNPLUS ETHERNET DRIVER
 M:	Wells Lu <wellslutw@gmail.com>
 L:	netdev@vger.kernel.org

Makefile

@@ -2,7 +2,7 @@
 VERSION = 6
 PATCHLEVEL = 17
 SUBLEVEL = 0
-EXTRAVERSION = -rc4
+EXTRAVERSION = -rc5
 NAME = Baby Opossum Posse
 
 # *DOCUMENTATION*

arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts

@@ -387,6 +387,8 @@
 
 &sdmmc1 {
 	bus-width = <4>;
+	no-1-8-v;
+	sdhci-caps-mask = <0x0 0x00200000>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_sdmmc1_default>;
 	status = "okay";

arch/arm/boot/dts/rockchip/rk3128-xpi-3128.dts

@@ -272,7 +272,7 @@
 	phy-mode = "rmii";
 	phy-handle = <&phy0>;
 	assigned-clocks = <&cru SCLK_MAC_SRC>;
-	assigned-clock-rates= <50000000>;
+	assigned-clock-rates = <50000000>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&rmii_pins>;
 	status = "okay";

arch/arm/boot/dts/rockchip/rv1109-relfor-saib.dts

@@ -250,9 +250,9 @@
 &i2s0 {
 	/delete-property/ pinctrl-0;
 	rockchip,trcm-sync-rx-only;
-	pinctrl-0 =  <&i2s0m0_sclk_rx>,
-		     <&i2s0m0_lrck_rx>,
-		     <&i2s0m0_sdi0>;
+	pinctrl-0 = <&i2s0m0_sclk_rx>,
+		    <&i2s0m0_lrck_rx>,
+		    <&i2s0m0_sdi0>;
 	pinctrl-names = "default";
 	status = "okay";
 };

arch/arm/mach-at91/Kconfig

@@ -1,4 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
+config ARCH_MICROCHIP
+	bool
+
 menuconfig ARCH_AT91
 	bool "AT91/Microchip SoCs"
 	depends on (CPU_LITTLE_ENDIAN && (ARCH_MULTI_V4T || ARCH_MULTI_V5)) || \
@@ -8,6 +11,7 @@ menuconfig ARCH_AT91
 	select GPIOLIB
 	select PINCTRL
 	select SOC_BUS
+	select ARCH_MICROCHIP
 
 if ARCH_AT91
 config SOC_SAMV7