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riscv: Add FPIOA and GPIO support for Kendryte K210

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This patch adds the necessary configs and docs for FPIOA and GPIO support
on the K210.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
This commit is contained in:
Sean Anderson 2020-09-14 11:02:06 -04:00 committed by Tom Rini
parent 2b5a719fc6
commit 0eabb2ff23
2 changed files with 71 additions and 2 deletions
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9
board/sipeed/maix/Kconfig
View file

@ -44,4 +44,13 @@ config BOARD_SPECIFIC_OPTIONS
imply RESET_SYSCON
imply SYSRESET
imply SYSRESET_SYSCON
imply PINCTRL
imply PINCONF
imply PINCTRL_K210
imply DM_GPIO
imply DWAPB_GPIO
imply SIFIVE_GPIO
imply CMD_GPIO
imply LED
imply LED_GPIO
endif

64
doc/board/sipeed/maix.rst
View file

@ -199,7 +199,7 @@ To run legacy images, use the ``bootm`` command:
Load Address: 80000000
Entry Point: 80000000
$ picocom -b 115200 /dev/ttyUSB0i
$ picocom -b 115200 /dev/ttyUSB0
=> loady
## Ready for binary (ymodem) download to 0x80000000 at 115200 bps...
C
@ -230,6 +230,66 @@ To run legacy images, use the ``bootm`` command:
argv[0] = "<NULL>"
Hit any key to exit ...
Pin Assignment
--------------
The K210 contains a Fully Programmable I/O Array (FPIOA), which can remap any of
its 256 input functions to any any of 48 output pins. The following table has
the default pin assignments for the BitM.
===== ========== =======
Pin Function Comment
===== ========== =======
IO_0 JTAG_TCLK
IO_1 JTAG_TDI
IO_2 JTAG_TMS
IO_3 JTAG_TDO
IO_4 UARTHS_RX
IO_5 UARTHS_TX
IO_6 Not set
IO_7 Not set
IO_8 GPIO_0
IO_9 GPIO_1
IO_10 GPIO_2
IO_11 GPIO_3
IO_12 GPIO_4 Green LED
IO_13 GPIO_5 Red LED
IO_14 GPIO_6 Blue LED
IO_15 GPIO_7
IO_16 GPIOHS_0 ISP
IO_17 GPIOHS_1
IO_18 I2S0_SCLK MIC CLK
IO_19 I2S0_WS MIC WS
IO_20 I2S0_IN_D0 MIC SD
IO_21 GPIOHS_5
IO_22 GPIOHS_6
IO_23 GPIOHS_7
IO_24 GPIOHS_8
IO_25 GPIOHS_9
IO_26 SPI1_D1 MMC MISO
IO_27 SPI1_SCLK MMC CLK
IO_28 SPI1_D0 MMC MOSI
IO_29 GPIOHS_13 MMC CS
IO_30 GPIOHS_14
IO_31 GPIOHS_15
IO_32 GPIOHS_16
IO_33 GPIOHS_17
IO_34 GPIOHS_18
IO_35 GPIOHS_19
IO_36 GPIOHS_20 Panel CS
IO_37 GPIOHS_21 Panel RST
IO_38 GPIOHS_22 Panel DC
IO_39 SPI0_SCK Panel WR
IO_40 SCCP_SDA
IO_41 SCCP_SCLK
IO_42 DVP_RST
IO_43 DVP_VSYNC
IO_44 DVP_PWDN
IO_45 DVP_HSYNC
IO_46 DVP_XCLK
IO_47 DVP_PCLK
===== ========== =======
Over- and Under-clocking
------------------------
@ -408,7 +468,7 @@ Address Size Description
0x8801C000 0x1000 riscv priv spec 1.9 config
0x8801D000 0x2000 flattened device tree (contains only addresses and
interrupts)
0x8801f000 0x1000 credits
0x8801F000 0x1000 credits
========== ========= ===========
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