[PATCH v2 9/9] ARM: stm32: document STM32H7R7 support

[Liu Changjie]

Describe the STM32H7R7 features and note the ART-Pi2 as the currently
supported development board.

Signed-off-by: Liu Changjie <liucj1228 at outlook.com>
---
Changes in v2:
- Add F: entries for the new clk driver, bindings, dt-bindings headers
  and documentation to the STM32 section of MAINTAINERS.

 Documentation/arch/arm/index.rst              |  1 +
 .../arch/arm/stm32/stm32h7r7-overview.rst     | 28 +++++++++++++++++++
 MAINTAINERS                                   |  6 ++++
 3 files changed, 35 insertions(+)
 create mode 100644 Documentation/arch/arm/stm32/stm32h7r7-overview.rst

diff --git a/Documentation/arch/arm/index.rst b/Documentation/arch/arm/index.rst
index b15621093..1e33535e5 100644
--- a/Documentation/arch/arm/index.rst
+++ b/Documentation/arch/arm/index.rst
@@ -55,6 +55,7 @@ SoC-specific documents
    stm32/overview
    stm32/stm32h743-overview
    stm32/stm32h750-overview
+   stm32/stm32h7r7-overview
    stm32/stm32f769-overview
    stm32/stm32f429-overview
    stm32/stm32mp13-overview
diff --git a/Documentation/arch/arm/stm32/stm32h7r7-overview.rst b/Documentation/arch/arm/stm32/stm32h7r7-overview.rst
new file mode 100644
index 000000000..7856b4319
--- /dev/null
+++ b/Documentation/arch/arm/stm32/stm32h7r7-overview.rst
@@ -0,0 +1,28 @@
+==================
+STM32H7R7 Overview
+==================
+
+Introduction
+------------
+
+The STM32H7R7 is a Cortex-M7 microcontroller running at up to 600 MHz. It
+features:
+
+- 64 Kbytes of user boot flash and 620 Kbytes of internal SRAM
+- 32 Kbytes of instruction cache and 32 Kbytes of data cache
+- Two serial xSPI interfaces and an FMC parallel memory interface
+- SD/MMC, Ethernet, USB and FD-CAN controllers
+- I2C, SPI, I3C and serial interfaces
+- NeoChrom graphics accelerator, JPEG codec and LCD-TFT controller
+
+The RT-Thread ART-Pi2 development board is supported.
+
+Resources
+---------
+
+Datasheet and reference manual are publicly available on the STMicroelectronics
+website (STM32H7R7_).
+
+.. _STM32H7R7: https://www.st.com/en/microcontrollers-microprocessors/stm32h7r7-7s7.html
+
+:Authors: Liu Changjie <liucj1228 at outlook.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 1ab873685..bd86eab10 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3667,10 +3667,16 @@ L:	linux-stm32 at st-md-mailman.stormreply.com (moderated for non-subscribers)
 L:	linux-arm-kernel at lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32.git stm32-next
+F:	Documentation/arch/arm/stm32/stm32h7r7-overview.rst
+F:	Documentation/devicetree/bindings/arm/stm32/
+F:	Documentation/devicetree/bindings/clock/st,stm32-rcc.yaml
 F:	arch/arm/boot/dts/st/stm32*
 F:	arch/arm/mach-stm32/
 F:	arch/arm64/boot/dts/st/
+F:	drivers/clk/clk-stm32h7rs.c
 F:	drivers/clocksource/armv7m_systick.c
+F:	include/dt-bindings/clock/stm32h7rs-clks.h
+F:	include/dt-bindings/mfd/stm32h7rs-rcc.h
 N:	stm32
 N:	stm
 
-- 
2.55.0