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arm: imx8m: imx8mm-cl-iot-gate: detect extension board
Extension boards can be added to Compulab's iot-gate-imx8mm. We implement extension board manager for detecting the extension boards. Signed-off-by: Uri Mashiach <uri.mashiach@compulab.co.il> Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org> Cc: uboot-imx <uboot-imx@nxp.com>
This commit is contained in:
Ying-Chun Liu (PaulLiu)
Stefano Babic
parent
27ea1c53a3
commit
556523b955
@ -153,6 +153,7 @@ config TARGET_IMX8MM_CL_IOT_GATE
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select IMX8MM
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select SUPPORT_SPL
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select IMX8M_LPDDR4
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select SUPPORT_EXTENSION_SCAN
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config TARGET_IMX8MM_CL_IOT_GATE_OPTEE
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bool "CompuLab iot-gate-imx8 with optee support"
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@ -160,6 +161,7 @@ config TARGET_IMX8MM_CL_IOT_GATE_OPTEE
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select IMX8MM
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select SUPPORT_SPL
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select IMX8M_LPDDR4
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select SUPPORT_EXTENSION_SCAN
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endchoice
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source "board/beacon/imx8mm/Kconfig"
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@ -6,14 +6,21 @@
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#include <common.h>
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#include <env.h>
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#include <extension_board.h>
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#include <hang.h>
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#include <i2c.h>
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#include <init.h>
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#include <miiphy.h>
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#include <netdev.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/imx8mm_pins.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/global_data.h>
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#include <asm/io.h>
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#include <asm/mach-imx/gpio.h>
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#include <asm/mach-imx/mxc_i2c.h>
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#include <asm/sections.h>
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#include "ddr/ddr.h"
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@ -41,6 +48,25 @@ int board_phys_sdram_size(phys_size_t *size)
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return 0;
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}
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/* IOT_GATE-iMX8 extension boards ID */
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typedef enum {
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IOT_GATE_EXT_EMPTY, /* No extension */
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IOT_GATE_EXT_CAN, /* CAN bus */
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IOT_GATE_EXT_IED, /* Bridge */
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IOT_GATE_EXT_POE, /* POE */
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IOT_GATE_EXT_POEV2, /* POEv2 */
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} iot_gate_imx8_ext;
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typedef enum {
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IOT_GATE_IMX8_CARD_ID_EMPTY = 0, /* card id - uninhabited */
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IOT_GATE_IMX8_CARD_ID_DI4O4 = 1, /* Card ID - IED-DI4O4 */
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IOT_GATE_IMX8_CARD_ID_RS_485 = 2, /* Card ID - IED-RS485 */
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IOT_GATE_IMX8_CARD_ID_TPM = 3, /* Card ID - IED-TPM */
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IOT_GATE_IMX8_CARD_ID_CAN = 4, /* Card ID - IED-CAN */
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IOT_GATE_IMX8_CARD_ID_CL420 = 5, /* Card ID - IED-CL420 */
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IOT_GATE_IMX8_CARD_ID_RS_232 = 6, /* Card ID - IED-RS232 */
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} iot_gate_imx8_ied_ext;
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static int setup_fec(void)
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{
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if (IS_ENABLED(CONFIG_FEC_MXC)) {
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@ -85,6 +111,313 @@ int board_mmc_get_env_dev(int devno)
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return devno;
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}
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#define IOT_GATE_IMX8_EXT_I2C 3 /* I2C ID of the extension board */
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#define IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM 0x54 /* I2C address of the EEPROM */
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/* I2C address of the EEPROM in the POE extension */
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#define IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM_POE 0x50
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#define IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM_POEV2 0x51
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#define IOT_GATE_IMX8_EXT_I2C_ADDR_GPIO 0x22 /* I2C address of the GPIO
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extender */
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static int iot_gate_imx8_ext_id = IOT_GATE_EXT_EMPTY; /* Extension board ID */
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static int iot_gate_imx8_ext_ied_id [3] = {
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IOT_GATE_IMX8_CARD_ID_EMPTY,
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IOT_GATE_IMX8_CARD_ID_EMPTY,
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IOT_GATE_IMX8_CARD_ID_EMPTY };
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/*
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* iot_gate_imx8_detect_ext() - extended board detection
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* The detection is done according to the detected I2C devices.
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*/
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static void iot_gate_imx8_detect_ext(void)
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{
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int ret;
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struct udevice *i2c_bus, *i2c_dev;
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ret = uclass_get_device_by_seq(UCLASS_I2C, IOT_GATE_IMX8_EXT_I2C,
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&i2c_bus);
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if (ret) {
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printf("%s: Failed getting i2c device\n", __func__);
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return;
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}
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ret = dm_i2c_probe(i2c_bus, IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM_POE, 0,
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&i2c_dev);
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if (!ret) {
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iot_gate_imx8_ext_id = IOT_GATE_EXT_POE;
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return;
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}
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ret = dm_i2c_probe(i2c_bus, IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM_POEV2, 0,
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&i2c_dev);
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if (!ret) {
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iot_gate_imx8_ext_id = IOT_GATE_EXT_POEV2;
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return;
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}
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ret = dm_i2c_probe(i2c_bus, IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM, 0,
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&i2c_dev);
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if (ret){
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iot_gate_imx8_ext_id = IOT_GATE_EXT_EMPTY;
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return;
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}
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/* Only the bridge extension includes the GPIO extender */
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ret = dm_i2c_probe(i2c_bus, IOT_GATE_IMX8_EXT_I2C_ADDR_GPIO, 0,
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&i2c_dev);
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if (ret) /* GPIO extender not detected */
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iot_gate_imx8_ext_id = IOT_GATE_EXT_CAN;
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else /* GPIO extender detected */
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iot_gate_imx8_ext_id = IOT_GATE_EXT_IED;
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}
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static iomux_v3_cfg_t const iot_gate_imx8_ext_ied_pads[] = {
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IMX8MM_PAD_NAND_ALE_GPIO3_IO0 | MUX_PAD_CTRL(PAD_CTL_PE),
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IMX8MM_PAD_NAND_CE0_B_GPIO3_IO1 | MUX_PAD_CTRL(PAD_CTL_PE),
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IMX8MM_PAD_NAND_DATA00_GPIO3_IO6 | MUX_PAD_CTRL(PAD_CTL_PE),
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IMX8MM_PAD_NAND_DATA01_GPIO3_IO7 | MUX_PAD_CTRL(PAD_CTL_PE),
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IMX8MM_PAD_NAND_DATA02_GPIO3_IO8 | MUX_PAD_CTRL(PAD_CTL_PE),
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IMX8MM_PAD_NAND_DATA03_GPIO3_IO9 | MUX_PAD_CTRL(PAD_CTL_PE),
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};
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static iomux_v3_cfg_t const iot_gate_imx8_ext_poev2_pads[] = {
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IMX8MM_PAD_SAI3_TXD_GPIO5_IO1 | MUX_PAD_CTRL(PAD_CTL_PE |
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PAD_CTL_PUE),
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};
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/* Extension board bridge GPIOs */
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#define IOT_GATE_IMX8_GPIO_EXT_IED_I0 IMX_GPIO_NR(3, 0) /* IN 0 */
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#define IOT_GATE_IMX8_GPIO_EXT_IED_I1 IMX_GPIO_NR(3, 1) /* IN 1 */
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#define IOT_GATE_IMX8_GPIO_EXT_IED_I2 IMX_GPIO_NR(3, 6) /* IN 2 */
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#define IOT_GATE_IMX8_GPIO_EXT_IED_I3 IMX_GPIO_NR(3, 7) /* IN 3 */
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#define IOT_GATE_IMX8_GPIO_EXT_IED_O0 IMX_GPIO_NR(3, 8) /* OUT 0 */
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#define IOT_GATE_IMX8_GPIO_EXT_IED_O1 IMX_GPIO_NR(3, 9) /* OUT 1 */
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#define IOT_GATE_IMX8_GPIO_EXT_IED_O2 IMX_GPIO_NR(6, 9) /* OUT 2 */
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#define IOT_GATE_IMX8_GPIO_EXT_IED_O3 IMX_GPIO_NR(6, 10)/* OUT 3 */
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/* Extension board POE GPIOs */
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#define IOT_GATE_IMX8_GPIO_EXT_POE_MUX IMX_GPIO_NR(5, 1)/* USB_MUX */
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/*
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* iot_gate_imx8_update_pinmux() - update the pinmux
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* Update the pinmux according to the detected extended board.
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*/
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static void iot_gate_imx8_update_pinmux(void)
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{
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if (iot_gate_imx8_ext_id == IOT_GATE_EXT_POEV2) {
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imx_iomux_v3_setup_multiple_pads(iot_gate_imx8_ext_poev2_pads,
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ARRAY_SIZE(iot_gate_imx8_ext_poev2_pads));
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gpio_request(IOT_GATE_IMX8_GPIO_EXT_POE_MUX, "poev2_usb-mux");
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/* Update USB MUX state */
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gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_POE_MUX, 1);
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return;
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}
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if (iot_gate_imx8_ext_id != IOT_GATE_EXT_IED)
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return;
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imx_iomux_v3_setup_multiple_pads(iot_gate_imx8_ext_ied_pads,
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ARRAY_SIZE(iot_gate_imx8_ext_ied_pads));
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gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_I0, "ied-di4o4_i0");
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gpio_direction_input(IOT_GATE_IMX8_GPIO_EXT_IED_I0);
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gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_I1, "ied-di4o4_i1");
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gpio_direction_input(IOT_GATE_IMX8_GPIO_EXT_IED_I1);
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gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_I2, "ied-di4o4_i2");
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gpio_direction_input(IOT_GATE_IMX8_GPIO_EXT_IED_I2);
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gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_I3, "ied-di4o4_i3");
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gpio_direction_input(IOT_GATE_IMX8_GPIO_EXT_IED_I3);
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gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_O0, "ied-di4o4_o0");
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gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_IED_O0, 0);
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gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_O1, "ied-di4o4_o1");
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gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_IED_O1, 0);
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gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_O2, "ied-di4o4_o2");
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gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_IED_O2, 0);
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gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_O3, "ied-di4o4_o3");
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gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_IED_O3, 0);
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}
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#define IOT_GATE_IMX8_GPIO_S0B0 IMX_GPIO_NR(6, 0) /* Slot ID slot 0 bit 0 */
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#define IOT_GATE_IMX8_GPIO_S0B1 IMX_GPIO_NR(6, 1) /* Slot ID slot 0 bit 1 */
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#define IOT_GATE_IMX8_GPIO_S0B2 IMX_GPIO_NR(6, 2) /* Slot ID slot 0 bit 2 */
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#define IOT_GATE_IMX8_GPIO_S1B0 IMX_GPIO_NR(6, 3) /* Slot ID slot 1 bit 0 */
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#define IOT_GATE_IMX8_GPIO_S1B1 IMX_GPIO_NR(6, 4) /* Slot ID slot 1 bit 1 */
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#define IOT_GATE_IMX8_GPIO_S1B2 IMX_GPIO_NR(6, 5) /* Slot ID slot 1 bit 2 */
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#define IOT_GATE_IMX8_GPIO_S2B0 IMX_GPIO_NR(6, 6) /* Slot ID slot 2 bit 0 */
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#define IOT_GATE_IMX8_GPIO_S2B1 IMX_GPIO_NR(6, 7) /* Slot ID slot 2 bit 1 */
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#define IOT_GATE_IMX8_GPIO_S2B2 IMX_GPIO_NR(6, 8) /* Slot ID slot 2 bit 2 */
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/*
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* iot_gate_imx8_update_ext_ied()
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* Update device tree of the extended board IED-BASE.
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* The device tree is updated according to the detected sub modules.
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*
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* Return 0 for success, 1 for failure.
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*/
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static int iot_gate_imx8_update_ext_ied(void)
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{
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int revision;
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if (iot_gate_imx8_ext_id != IOT_GATE_EXT_IED)
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return 0;
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/* ID GPIO initializations */
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if (gpio_request(IOT_GATE_IMX8_GPIO_S0B0, "id_s0b0") ||
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gpio_request(IOT_GATE_IMX8_GPIO_S0B1, "id_s0b1") ||
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gpio_request(IOT_GATE_IMX8_GPIO_S0B2, "id_s0b2") ||
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gpio_request(IOT_GATE_IMX8_GPIO_S1B0, "id_s1b0") ||
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gpio_request(IOT_GATE_IMX8_GPIO_S1B1, "id_s1b1") ||
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gpio_request(IOT_GATE_IMX8_GPIO_S1B2, "id_s1b2") ||
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gpio_request(IOT_GATE_IMX8_GPIO_S2B0, "id_s2b0") ||
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gpio_request(IOT_GATE_IMX8_GPIO_S2B1, "id_s2b1") ||
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gpio_request(IOT_GATE_IMX8_GPIO_S2B2, "id_s2b2")) {
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printf("%s: ID GPIO request failure\n", __func__);
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return 1;
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}
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gpio_direction_input(IOT_GATE_IMX8_GPIO_S0B0);
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gpio_direction_input(IOT_GATE_IMX8_GPIO_S0B1);
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gpio_direction_input(IOT_GATE_IMX8_GPIO_S0B2);
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gpio_direction_input(IOT_GATE_IMX8_GPIO_S1B0);
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gpio_direction_input(IOT_GATE_IMX8_GPIO_S1B1);
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gpio_direction_input(IOT_GATE_IMX8_GPIO_S1B2);
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gpio_direction_input(IOT_GATE_IMX8_GPIO_S2B0);
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gpio_direction_input(IOT_GATE_IMX8_GPIO_S2B1);
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gpio_direction_input(IOT_GATE_IMX8_GPIO_S2B2);
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/* Get slot 0 card ID */
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revision = gpio_get_value(IOT_GATE_IMX8_GPIO_S0B0) |
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gpio_get_value(IOT_GATE_IMX8_GPIO_S0B1) << 1 |
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gpio_get_value(IOT_GATE_IMX8_GPIO_S0B2) << 2;
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iot_gate_imx8_ext_ied_id[0] = revision;
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/* Get slot 1 card ID */
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revision = gpio_get_value(IOT_GATE_IMX8_GPIO_S1B0) |
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gpio_get_value(IOT_GATE_IMX8_GPIO_S1B1) << 1 |
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gpio_get_value(IOT_GATE_IMX8_GPIO_S1B2) << 2;
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iot_gate_imx8_ext_ied_id[1] = revision;
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/* Get slot 2 card ID */
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revision = gpio_get_value(IOT_GATE_IMX8_GPIO_S2B0) |
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gpio_get_value(IOT_GATE_IMX8_GPIO_S2B1) << 1 |
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gpio_get_value(IOT_GATE_IMX8_GPIO_S2B2) << 2;
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iot_gate_imx8_ext_ied_id[2] = revision;
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return 0;
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}
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int board_fix_fdt(void *rw_fdt_blob)
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{
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return 0;
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}
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int extension_board_scan(struct list_head *extension_list)
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{
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struct extension *extension = NULL;
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int i;
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int ret = 0;
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iot_gate_imx8_detect_ext(); /* Extended board detection */
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switch(iot_gate_imx8_ext_id) {
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case IOT_GATE_EXT_EMPTY:
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break;
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case IOT_GATE_EXT_CAN:
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extension = calloc(1, sizeof(struct extension));
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snprintf(extension->name, sizeof(extension->name),
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"IOT_GATE_EXT_CAN");
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break;
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case IOT_GATE_EXT_IED:
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extension = calloc(1, sizeof(struct extension));
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snprintf(extension->name, sizeof(extension->name),
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"IOT_GATE_EXT_IED");
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snprintf(extension->overlay, sizeof(extension->overlay),
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"imx8mm-cl-iot-gate-ied.dtbo");
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break;
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case IOT_GATE_EXT_POE:
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extension = calloc(1, sizeof(struct extension));
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snprintf(extension->name, sizeof(extension->name),
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"IOT_GATE_EXT_POE");
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break;
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case IOT_GATE_EXT_POEV2:
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extension = calloc(1, sizeof(struct extension));
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snprintf(extension->name, sizeof(extension->name),
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"IOT_GATE_EXT_POEV2");
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break;
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default:
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printf("IOT_GATE-iMX8 extension board: unknown\n");
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break;
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}
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if (extension) {
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snprintf(extension->owner, sizeof(extension->owner),
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"Compulab");
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list_add_tail(&extension->list, extension_list);
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ret = 1;
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} else
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return ret;
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iot_gate_imx8_update_pinmux();
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iot_gate_imx8_update_ext_ied();
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for (i=0; i<ARRAY_SIZE(iot_gate_imx8_ext_ied_id); i++) {
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extension = NULL;
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switch (iot_gate_imx8_ext_ied_id[i]) {
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case IOT_GATE_IMX8_CARD_ID_EMPTY:
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break;
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case IOT_GATE_IMX8_CARD_ID_RS_485:
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extension = calloc(1, sizeof(struct extension));
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snprintf(extension->name, sizeof(extension->name),
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"IOT_GATE_IMX8_CARD_ID_RS_485");
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break;
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case IOT_GATE_IMX8_CARD_ID_RS_232:
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extension = calloc(1, sizeof(struct extension));
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snprintf(extension->name, sizeof(extension->name),
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"IOT_GATE_IMX8_CARD_ID_RS_232");
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break;
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case IOT_GATE_IMX8_CARD_ID_CAN:
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extension = calloc(1, sizeof(struct extension));
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snprintf(extension->name, sizeof(extension->name),
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"IOT_GATE_IMX8_CARD_ID_CAN");
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snprintf(extension->overlay, sizeof(extension->overlay),
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"imx8mm-cl-iot-gate-ied-can%d.dtbo", i);
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break;
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case IOT_GATE_IMX8_CARD_ID_TPM:
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||||
extension = calloc(1, sizeof(struct extension));
|
||||
snprintf(extension->name, sizeof(extension->name),
|
||||
"IOT_GATE_IMX8_CARD_ID_TPM");
|
||||
snprintf(extension->overlay, sizeof(extension->overlay),
|
||||
"imx8mm-cl-iot-gate-ied-tpm%d.dtbo", i);
|
||||
break;
|
||||
case IOT_GATE_IMX8_CARD_ID_CL420:
|
||||
extension = calloc(1, sizeof(struct extension));
|
||||
snprintf(extension->name, sizeof(extension->name),
|
||||
"IOT_GATE_IMX8_CARD_ID_CL420");
|
||||
snprintf(extension->overlay, sizeof(extension->overlay),
|
||||
"imx8mm-cl-iot-gate-ied-can%d.dtbo", i);
|
||||
break;
|
||||
case IOT_GATE_IMX8_CARD_ID_DI4O4:
|
||||
extension = calloc(1, sizeof(struct extension));
|
||||
snprintf(extension->name, sizeof(extension->name),
|
||||
"IOT_GATE_IMX8_CARD_ID_DI4O4");
|
||||
break;
|
||||
default:
|
||||
printf("%s: invalid slot %d card ID: %d\n",
|
||||
__func__, i, iot_gate_imx8_ext_ied_id[i]);
|
||||
break;
|
||||
}
|
||||
if (extension) {
|
||||
snprintf(extension->owner, sizeof(extension->owner),
|
||||
"Compulab");
|
||||
snprintf(extension->other, sizeof(extension->other),
|
||||
"On slot %d", i);
|
||||
list_add_tail(&extension->list, extension_list);
|
||||
ret = ret + 1;
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int board_late_init(void)
|
||||
{
|
||||
if (IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG)) {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user