imx8ulp m33 core gpio

[tangchao90]

my dts configure is:

rpmsg_gpioa: gpio@0 {
compatible = "fsl,imx-rpmsg-gpio";
port_idx = <0>;
gpio-controller;
#gpio-cells = <2>;
#interrupt-cells = <2>;
interrupt-controller;
interrupt-parent = <&rpmsg_gpioa>;
status = "okay";
};

and when the system start , i do the command below

gpioget -c gpiochip0 0

[ 1387.700991] gpio_rpmsg virtio0.rpmsg-io-channel.-1.4: rpmsg not ack 1!
gpioget: unable to request lines: Invalid argument

I sure the gpiochip0 is the gpioa, 

how  can I control the m33 gpio?

[wendy-liu]

Hello @Zhiming_Liu 

    According to your suggestion, I add some configutation in 

voidBOARD_SetTrdcGlobalConfig(void) as below:

        /* non secure state can access lpuart2(PBridge2 slot 11, T-MBC3) for eDMA0 */

        mbcBlockConfig.memoryAccessControlSelect = TRDC_MBC_ACCESS_CONTROL_POLICY_ALL_INDEX;

        mbcBlockConfig.nseEnable                 = true; /* non secure state can access the block for eDMA0 */

        mbcBlockConfig.mbcIdx                    = 3U;   /* MBC3 */

        mbcBlockConfig.domainIdx                 = TRDC_DMA0_DOMAIN_ID; /* MBC2_DOM0 */

        mbcBlockConfig.slaveMemoryIdx            = 0U;                  /* MBC3_DOM0_MEM0 */

        mbcBlockConfig.memoryBlockIdx            = 11U;                 /* MBC3_DOM0_MEM0_BLK_CFG_W11 */

        TRDC_MbcSetMemoryBlockConfig(TRDC, &mbcBlockConfig);

But the result is that I don't read reg of LPUART2[PCC_REG(

kCLOCK_Lpuart2). It means the Peripheral is not present...

Is there any new information on this?Looking forward to your reply!

[Zhiming_Liu]

Hello,

For the default m33 binary(power mode switch demo), this demo only register these two pins in sdk.

Linux side test:

You need register any gpios in sdk manually.

Best Regards,
Zhiming

[tangchao90]

hello 

    Great, i can do it also! 

    "gpioget -c gpiochip1 5" can work well

    "gpioset -c gpiochip1 5=1" but this command is blocked, I don't know why

[Zhiming_Liu]

Hello,

This gpio is setting as interrput pin for touchscreen in GPIOB_INT0_IRQHandler. If you need to test m33 rpmsg gpio setting, please register another unused pin in app_srtm.c

Best Regards,
Zhiming

[tangchao90]

我的SDK版本信息 <ksdk:manifest xmlns:ksdk="http://nxp.com/ksdk/2.0/ksdk_manifest_v3.0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" id="SDK_2.x_MIMX8UD7xxx08" name="MIMX8UD7xxx08" brief="This is SDK version 24.12.00 manifest file. It describes the content of the MIMX8UD7xxx08 and additional settings for tools that support SDK version 24.12.00" format_version="3.15" api_version="2.0.0" configuration="bfc65bba44094a9ec982e114485cebdd" xsi:schemaLocation="http://nxp.com/ksdk/2.0/ksdk_manifest_v3.0.xsd http://nxp.com/mcuxpresso/sdk/sdk_manifest_v3.15.xsd">

[tangchao90]

hello Zhiming

    i have a try, i use the demo of  boards/evkmimx8ulp/driver_examples/rgpio/led_output

i change the GPIOE6 to GPIOC0, the gpio may be taking turns to shine，but it's not! 

diff --git a/boards/evkmimx8ulp/driver_examples/rgpio/led_output/cm33/app.h b/boards/evkmimx8ulp/driver_examples/rgpio/led_output/cm33/app.h
index 6589748..c7857db 100644
--- a/boards/evkmimx8ulp/driver_examples/rgpio/led_output/cm33/app.h
+++ b/boards/evkmimx8ulp/driver_examples/rgpio/led_output/cm33/app.h
@@ -11,8 +11,8 @@
* Definitions
******************************************************************************/
/*${macro:start}*/
-#define BOARD_LED_RGPIO GPIOE
-#define BOARD_LED_RGPIO_PIN 6U
+#define BOARD_LED_RGPIO GPIOC
+#define BOARD_LED_RGPIO_PIN 0U
/*${macro:end}*/

/*******************************************************************************
diff --git a/boards/evkmimx8ulp/driver_examples/rgpio/led_output/cm33/pin_mux.c b/boards/evkmimx8ulp/driver_examples/rgpio/led_output/cm33/pin_mux.c
index b87442f..485879e 100644
--- a/boards/evkmimx8ulp/driver_examples/rgpio/led_output/cm33/pin_mux.c
+++ b/boards/evkmimx8ulp/driver_examples/rgpio/led_output/cm33/pin_mux.c
@@ -82,7 +82,7 @@ BOARD_InitLedPins:
*
* END ****************************************************************************************************************/
void BOARD_InitLedPins(void) { /*!< Function assigned for the core: Cortex-M33[cm33] */
- IOMUXC_SetPinMux(IOMUXC_PTE6_PTE6, 0U);
+ IOMUXC_SetPinMux(IOMUXC_PTC0_PTC0, 0U);
}

[Zhiming_Liu]

我这边验证过了，需要修改atf，把GPIOC的时钟打开。

plat/imx/imx8ulp/imx8ulp_bl31_setup.c

	mmio_write_32(0x28091000 + 0xbc, 0xc0000000);
	mmio_write_32(0x28820010, 0xffffffff);
	mmio_write_32(0x28820014, 0x3);
	mmio_write_32(0x28820018, 0xffffffff);
	mmio_write_32(0x2882001c, 0x3);