Hi Sean, On Mon, Sep 14, 2020 at 11:02:06AM -0400, Sean Anderson wrote: > This patch adds the necessary configs and docs for FPIOA and GPIO support > on the K210. > > Signed-off-by: Sean Anderson <sean...@gmail.com> > --- > > Changes in v6: > - Add dependency on "riscv: Clean up timer drivers", which fixes the bugs > discovered earlier. >
I am curious about the weird bug you found in v5. Is there any new discovery on the cause or how the bug is resolved ? You have mentioned that any modification to init_sequence_f or init_sequence_r would lead to a successful boot. Is this related to "riscv: Clean up timer drivers" and thus resolve the bug ? Best regards, Leo > Changes in v5: > - Increase CONFIG_LOGLEVEL to 5 as a hack to get the board booting again > > Changes in v3: > - Document pins 6 and 7 as not set > > Changes in v2: > - Remove SPI flash related Kconfig settings > > board/sipeed/maix/Kconfig | 9 ++++++ > doc/board/sipeed/maix.rst | 64 +++++++++++++++++++++++++++++++++++++-- > 2 files changed, 71 insertions(+), 2 deletions(-) > > diff --git a/board/sipeed/maix/Kconfig b/board/sipeed/maix/Kconfig > index 0cdcd32adc..4c42dd2087 100644 > --- a/board/sipeed/maix/Kconfig > +++ b/board/sipeed/maix/Kconfig > @@ -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 > diff --git a/doc/board/sipeed/maix.rst b/doc/board/sipeed/maix.rst > index efcde9aebf..90ef70b7cf 100644 > --- a/doc/board/sipeed/maix.rst > +++ b/doc/board/sipeed/maix.rst > @@ -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 > ------------------------ > > @@ -404,7 +464,7 @@ 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 > ========== ========= =========== > > Links > -- > 2.28.0 >
