From patchwork Fri Nov 5 09:13:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ying-Chun Liu X-Patchwork-Id: 516820 Delivered-To: patch@linaro.org Received: by 2002:ad5:5208:0:0:0:0:0 with SMTP id p8csp2941523iml; Fri, 5 Nov 2021 02:14:05 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzIedeTGoIZCvRw45kDHePv7Si7/A89PWM2w6DD4y4xUGIT1E3hlQ11J4KuQZuv8fze98CN X-Received: by 2002:a17:906:52d8:: with SMTP id w24mr4340759ejn.296.1636103645245; Fri, 05 Nov 2021 02:14:05 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1636103645; cv=none; d=google.com; s=arc-20160816; b=FkgVlk3ddM/4g6Sp8qorLGsCJHrtidFSaFuU/aeVn/hz8CnvgQLDnqe78WfCqHqcSS c7mslgP6tRrHckGCdpxQX18IAVV8Dvyz0OC2TX8LNxzUg4ST+hs8VxzX0/6daPY1bO/v vjbWKIBWjsOifKJ4wQ6J1igIQIsOx6NpHN/oweokmMjDG5YlQzAwUXKINhM5Iq/70NJZ IYbCI8T1hgfzjKX7Ac+lwBuyDIKbTHnfUXB9W0AfZPe13ld1oLca/Vl41WOY3sYFfbmQ d8GU+Pqjm03qdRT5UTu1RENhLao7mLI1ynghU3mEC8jxY3CQvDKhDENVsMDeRwPDLPoa mzRA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=xFy1lgxN5ZcQ40MBeCMb8BXUD89ykddT49RO+4SIiLA=; b=LhkVZwohO+x/HMB9a5mRs5UBMwiQZrdm7hMdepnzxw4vcQdM+tpxr6Bpeoe8wFLBW+ mlfhJra2dZ6suJWe7aii/qsI4IF3W2gmegtKWRp6j13qC0Hkz2w8FpkekSRDHJe099Yc 254r6MyMGW9e5TI0tBVQeVFcQBH2Z/qE24uRtixouAUKfHBRkYbj4Oetsr9KoEW88WPZ +w2pBBLC+GRK0oDP2fM8UzPI+nD+f5zd4O5lNWuNtVGSEksxB6d8XOzplpk2h3UTE86W UxklsLO2mpY4pr5a3S2Jf0id0+dDglDxCW5bavHO9EVoPVlCF/U2YYyAqC97CSFUwjwP ltXQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=UGjlRiJM; spf=pass (google.com: domain of u-boot-bounces@lists.denx.de designates 85.214.62.61 as permitted sender) smtp.mailfrom=u-boot-bounces@lists.denx.de; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Return-Path: Received: from phobos.denx.de (phobos.denx.de. [85.214.62.61]) by mx.google.com with ESMTPS id a16si3818319ejk.490.2021.11.05.02.14.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Nov 2021 02:14:05 -0700 (PDT) Received-SPF: pass (google.com: domain of u-boot-bounces@lists.denx.de designates 85.214.62.61 as permitted sender) client-ip=85.214.62.61; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=UGjlRiJM; spf=pass (google.com: domain of u-boot-bounces@lists.denx.de designates 85.214.62.61 as permitted sender) smtp.mailfrom=u-boot-bounces@lists.denx.de; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 3E3E683701; Fri, 5 Nov 2021 10:13:51 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="UGjlRiJM"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id ABCCD83577; Fri, 5 Nov 2021 10:13:47 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.2 Received: from mail-pf1-x435.google.com (mail-pf1-x435.google.com [IPv6:2607:f8b0:4864:20::435]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 51DD583577 for ; Fri, 5 Nov 2021 10:13:39 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=grandpaul@gmail.com Received: by mail-pf1-x435.google.com with SMTP id x64so8350490pfd.6 for ; Fri, 05 Nov 2021 02:13:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=xFy1lgxN5ZcQ40MBeCMb8BXUD89ykddT49RO+4SIiLA=; b=UGjlRiJMYSfaNRrd+taYu7/4RP8rleMFSqIn91k21oXg8KlXKq+j54mHO9cCnQfqVJ C9rdgfYTOYZjdeEKOIOWWClt6NdhIHePf2XV8DerX5EyM32QVXyIRUF8rMGiT7TfyEfc ckBrKWbcbpQpVtr3nVz6RyQy5CHt9MqO2+yZ2Bjo9lrTYikMJw8PNVapH2Y/KdRejp5x Ue5yXOP4FBpwpPN3ug6fD4pNyfz2oUJ5shIgRE146ocBiiz6H7is+ZXoC/6S7M2PiWgw ArloMdOwPSgjUrVoCYRWoIt7njSarhe0VUmsXnkCF61XmYzXLBeoiLB/A1mXULnnw0RW zV+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=xFy1lgxN5ZcQ40MBeCMb8BXUD89ykddT49RO+4SIiLA=; b=NEjsKwCHbJG2T+UiJWOoMfZsW0tg52reSJKrN/Q6fpm8fXkvxFF3F1QQZ+2pE3Y1lx HCPV519MAFsS+3VxfmALj+ZJj1QU02tN/TVouyzkxUVCz1FHMDtNjP2jdGxkpWs7KtlW bylaUpQ3zIhYRzj0P1aAEfWljxAykQxuLXEoOC7TVeYa2erqIZ3GFMa/hF2fiw25V+cl moDfpIP+VGXWF89P4hL2hykSdv1weavCvosuBBN3lKwrBty5YhCEsWCfs0DrXiuDTgYW 27JJbd4bqvEjl+Vp9hXyvx2Rc0ghjrLkML8uoCclKosYoQIOr2Pj1uIuNWnNpqdt3a6k TQuQ== X-Gm-Message-State: AOAM530+hIk7jkQlVI1Wj0zaC4KydBuzyTnP6Zb4KScrlATNOCI4idt1 4BOFyD/9c/qHUYuICY9mXNT75+aboRA= X-Received: by 2002:a63:374f:: with SMTP id g15mr43811326pgn.193.1636103616171; Fri, 05 Nov 2021 02:13:36 -0700 (PDT) Received: from localhost (host-111-184-129-17.dynamic.kbtelecom.net. [111.184.129.17]) by smtp.gmail.com with ESMTPSA id w11sm5707114pge.48.2021.11.05.02.13.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Nov 2021 02:13:35 -0700 (PDT) From: Ying-Chun Liu To: u-boot@lists.denx.de Cc: "Ying-Chun Liu (PaulLiu)" , Uri Mashiach , uboot-imx Subject: [PATCH 2/2] arm: imx8m: imx8mm-cl-iot-gate: detect extension board Date: Fri, 5 Nov 2021 17:13:25 +0800 Message-Id: <20211105091325.245043-3-grandpaul@gmail.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211105091325.245043-1-grandpaul@gmail.com> References: <20211105091325.245043-1-grandpaul@gmail.com> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.2 at phobos.denx.de X-Virus-Status: Clean From: "Ying-Chun Liu (PaulLiu)" 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 Signed-off-by: Ying-Chun Liu (PaulLiu) Cc: uboot-imx --- arch/arm/mach-imx/imx8m/Kconfig | 2 + .../imx8mm-cl-iot-gate/imx8mm-cl-iot-gate.c | 333 ++++++++++++++++++ 2 files changed, 335 insertions(+) -- 2.33.0 diff --git a/arch/arm/mach-imx/imx8m/Kconfig b/arch/arm/mach-imx/imx8m/Kconfig index 276b8bd974..bd2a7d6820 100644 --- a/arch/arm/mach-imx/imx8m/Kconfig +++ b/arch/arm/mach-imx/imx8m/Kconfig @@ -147,6 +147,7 @@ config TARGET_IMX8MM_CL_IOT_GATE select IMX8MM select SUPPORT_SPL select IMX8M_LPDDR4 + select SUPPORT_EXTENSION_SCAN config TARGET_IMX8MM_CL_IOT_GATE_OPTEE bool "CompuLab iot-gate-imx8 with optee support" @@ -154,6 +155,7 @@ config TARGET_IMX8MM_CL_IOT_GATE_OPTEE select IMX8MM select SUPPORT_SPL select IMX8M_LPDDR4 + select SUPPORT_EXTENSION_SCAN endchoice source "board/beacon/imx8mm/Kconfig" diff --git a/board/compulab/imx8mm-cl-iot-gate/imx8mm-cl-iot-gate.c b/board/compulab/imx8mm-cl-iot-gate/imx8mm-cl-iot-gate.c index cd15410978..7e2d88f449 100644 --- a/board/compulab/imx8mm-cl-iot-gate/imx8mm-cl-iot-gate.c +++ b/board/compulab/imx8mm-cl-iot-gate/imx8mm-cl-iot-gate.c @@ -6,14 +6,21 @@ #include #include +#include #include +#include #include #include #include #include +#include #include +#include #include +#include +#include +#include #include "ddr/ddr.h" @@ -41,6 +48,25 @@ int board_phys_sdram_size(phys_size_t *size) return 0; } +/* IOT_GATE-iMX8 extension boards ID */ +typedef enum { + IOT_GATE_EXT_EMPTY, /* No extension */ + IOT_GATE_EXT_CAN, /* CAN bus */ + IOT_GATE_EXT_IED, /* Bridge */ + IOT_GATE_EXT_POE, /* POE */ + IOT_GATE_EXT_POEV2, /* POEv2 */ +} iot_gate_imx8_ext; + +typedef enum { + IOT_GATE_IMX8_CARD_ID_EMPTY = 0, /* card id - uninhabited */ + IOT_GATE_IMX8_CARD_ID_DI4O4 = 1, /* Card ID - IED-DI4O4 */ + IOT_GATE_IMX8_CARD_ID_RS_485 = 2, /* Card ID - IED-RS485 */ + IOT_GATE_IMX8_CARD_ID_TPM = 3, /* Card ID - IED-TPM */ + IOT_GATE_IMX8_CARD_ID_CAN = 4, /* Card ID - IED-CAN */ + IOT_GATE_IMX8_CARD_ID_CL420 = 5, /* Card ID - IED-CL420 */ + IOT_GATE_IMX8_CARD_ID_RS_232 = 6, /* Card ID - IED-RS232 */ +} iot_gate_imx8_ied_ext; + static int setup_fec(void) { if (IS_ENABLED(CONFIG_FEC_MXC)) { @@ -85,6 +111,313 @@ int board_mmc_get_env_dev(int devno) return devno; } +#define IOT_GATE_IMX8_EXT_I2C 3 /* I2C ID of the extension board */ +#define IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM 0x54 /* I2C address of the EEPROM */ + +/* I2C address of the EEPROM in the POE extension */ +#define IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM_POE 0x50 +#define IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM_POEV2 0x51 +#define IOT_GATE_IMX8_EXT_I2C_ADDR_GPIO 0x22 /* I2C address of the GPIO + extender */ + +static int iot_gate_imx8_ext_id = IOT_GATE_EXT_EMPTY; /* Extension board ID */ +static int iot_gate_imx8_ext_ied_id [3] = { + IOT_GATE_IMX8_CARD_ID_EMPTY, + IOT_GATE_IMX8_CARD_ID_EMPTY, + IOT_GATE_IMX8_CARD_ID_EMPTY }; + +/* + * iot_gate_imx8_detect_ext() - extended board detection + * The detection is done according to the detected I2C devices. + */ +static void iot_gate_imx8_detect_ext(void) +{ + int ret; + struct udevice *i2c_bus, *i2c_dev; + + ret = uclass_get_device_by_seq(UCLASS_I2C, IOT_GATE_IMX8_EXT_I2C, + &i2c_bus); + if (ret) { + printf("%s: Failed getting i2c device\n", __func__); + return; + } + + ret = dm_i2c_probe(i2c_bus, IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM_POE, 0, + &i2c_dev); + if (!ret) { + iot_gate_imx8_ext_id = IOT_GATE_EXT_POE; + return; + } + + ret = dm_i2c_probe(i2c_bus, IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM_POEV2, 0, + &i2c_dev); + if (!ret) { + iot_gate_imx8_ext_id = IOT_GATE_EXT_POEV2; + return; + } + + ret = dm_i2c_probe(i2c_bus, IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM, 0, + &i2c_dev); + if (ret){ + iot_gate_imx8_ext_id = IOT_GATE_EXT_EMPTY; + return; + } + /* Only the bridge extension includes the GPIO extender */ + ret = dm_i2c_probe(i2c_bus, IOT_GATE_IMX8_EXT_I2C_ADDR_GPIO, 0, + &i2c_dev); + if (ret) /* GPIO extender not detected */ + iot_gate_imx8_ext_id = IOT_GATE_EXT_CAN; + else /* GPIO extender detected */ + iot_gate_imx8_ext_id = IOT_GATE_EXT_IED; +} + +static iomux_v3_cfg_t const iot_gate_imx8_ext_ied_pads[] = { + IMX8MM_PAD_NAND_ALE_GPIO3_IO0 | MUX_PAD_CTRL(PAD_CTL_PE), + IMX8MM_PAD_NAND_CE0_B_GPIO3_IO1 | MUX_PAD_CTRL(PAD_CTL_PE), + IMX8MM_PAD_NAND_DATA00_GPIO3_IO6 | MUX_PAD_CTRL(PAD_CTL_PE), + IMX8MM_PAD_NAND_DATA01_GPIO3_IO7 | MUX_PAD_CTRL(PAD_CTL_PE), + IMX8MM_PAD_NAND_DATA02_GPIO3_IO8 | MUX_PAD_CTRL(PAD_CTL_PE), + IMX8MM_PAD_NAND_DATA03_GPIO3_IO9 | MUX_PAD_CTRL(PAD_CTL_PE), +}; + +static iomux_v3_cfg_t const iot_gate_imx8_ext_poev2_pads[] = { + IMX8MM_PAD_SAI3_TXD_GPIO5_IO1 | MUX_PAD_CTRL(PAD_CTL_PE | + PAD_CTL_PUE), +}; + +/* Extension board bridge GPIOs */ +#define IOT_GATE_IMX8_GPIO_EXT_IED_I0 IMX_GPIO_NR(3, 0) /* IN 0 */ +#define IOT_GATE_IMX8_GPIO_EXT_IED_I1 IMX_GPIO_NR(3, 1) /* IN 1 */ +#define IOT_GATE_IMX8_GPIO_EXT_IED_I2 IMX_GPIO_NR(3, 6) /* IN 2 */ +#define IOT_GATE_IMX8_GPIO_EXT_IED_I3 IMX_GPIO_NR(3, 7) /* IN 3 */ +#define IOT_GATE_IMX8_GPIO_EXT_IED_O0 IMX_GPIO_NR(3, 8) /* OUT 0 */ +#define IOT_GATE_IMX8_GPIO_EXT_IED_O1 IMX_GPIO_NR(3, 9) /* OUT 1 */ +#define IOT_GATE_IMX8_GPIO_EXT_IED_O2 IMX_GPIO_NR(6, 9) /* OUT 2 */ +#define IOT_GATE_IMX8_GPIO_EXT_IED_O3 IMX_GPIO_NR(6, 10)/* OUT 3 */ + +/* Extension board POE GPIOs */ +#define IOT_GATE_IMX8_GPIO_EXT_POE_MUX IMX_GPIO_NR(5, 1)/* USB_MUX */ + +/* + * iot_gate_imx8_update_pinmux() - update the pinmux + * Update the pinmux according to the detected extended board. + */ +static void iot_gate_imx8_update_pinmux(void) +{ + if (iot_gate_imx8_ext_id == IOT_GATE_EXT_POEV2) { + imx_iomux_v3_setup_multiple_pads(iot_gate_imx8_ext_poev2_pads, + ARRAY_SIZE(iot_gate_imx8_ext_poev2_pads)); + gpio_request(IOT_GATE_IMX8_GPIO_EXT_POE_MUX, "poev2_usb-mux"); + /* Update USB MUX state */ + gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_POE_MUX, 1); + + return; + } + if (iot_gate_imx8_ext_id != IOT_GATE_EXT_IED) + return; + + imx_iomux_v3_setup_multiple_pads(iot_gate_imx8_ext_ied_pads, + ARRAY_SIZE(iot_gate_imx8_ext_ied_pads)); + + gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_I0, "ied-di4o4_i0"); + gpio_direction_input(IOT_GATE_IMX8_GPIO_EXT_IED_I0); + gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_I1, "ied-di4o4_i1"); + gpio_direction_input(IOT_GATE_IMX8_GPIO_EXT_IED_I1); + gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_I2, "ied-di4o4_i2"); + gpio_direction_input(IOT_GATE_IMX8_GPIO_EXT_IED_I2); + gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_I3, "ied-di4o4_i3"); + gpio_direction_input(IOT_GATE_IMX8_GPIO_EXT_IED_I3); + gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_O0, "ied-di4o4_o0"); + gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_IED_O0, 0); + gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_O1, "ied-di4o4_o1"); + gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_IED_O1, 0); + gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_O2, "ied-di4o4_o2"); + gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_IED_O2, 0); + gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_O3, "ied-di4o4_o3"); + gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_IED_O3, 0); +} + +#define IOT_GATE_IMX8_GPIO_S0B0 IMX_GPIO_NR(6, 0) /* Slot ID slot 0 bit 0 */ +#define IOT_GATE_IMX8_GPIO_S0B1 IMX_GPIO_NR(6, 1) /* Slot ID slot 0 bit 1 */ +#define IOT_GATE_IMX8_GPIO_S0B2 IMX_GPIO_NR(6, 2) /* Slot ID slot 0 bit 2 */ +#define IOT_GATE_IMX8_GPIO_S1B0 IMX_GPIO_NR(6, 3) /* Slot ID slot 1 bit 0 */ +#define IOT_GATE_IMX8_GPIO_S1B1 IMX_GPIO_NR(6, 4) /* Slot ID slot 1 bit 1 */ +#define IOT_GATE_IMX8_GPIO_S1B2 IMX_GPIO_NR(6, 5) /* Slot ID slot 1 bit 2 */ +#define IOT_GATE_IMX8_GPIO_S2B0 IMX_GPIO_NR(6, 6) /* Slot ID slot 2 bit 0 */ +#define IOT_GATE_IMX8_GPIO_S2B1 IMX_GPIO_NR(6, 7) /* Slot ID slot 2 bit 1 */ +#define IOT_GATE_IMX8_GPIO_S2B2 IMX_GPIO_NR(6, 8) /* Slot ID slot 2 bit 2 */ + +/* + * iot_gate_imx8_update_ext_ied() + * Update device tree of the extended board IED-BASE. + * The device tree is updated according to the detected sub modules. + * + * Return 0 for success, 1 for failure. + */ +static int iot_gate_imx8_update_ext_ied(void) +{ + int revision; + + if (iot_gate_imx8_ext_id != IOT_GATE_EXT_IED) + return 0; + + /* ID GPIO initializations */ + if (gpio_request(IOT_GATE_IMX8_GPIO_S0B0, "id_s0b0") || + gpio_request(IOT_GATE_IMX8_GPIO_S0B1, "id_s0b1") || + gpio_request(IOT_GATE_IMX8_GPIO_S0B2, "id_s0b2") || + gpio_request(IOT_GATE_IMX8_GPIO_S1B0, "id_s1b0") || + gpio_request(IOT_GATE_IMX8_GPIO_S1B1, "id_s1b1") || + gpio_request(IOT_GATE_IMX8_GPIO_S1B2, "id_s1b2") || + gpio_request(IOT_GATE_IMX8_GPIO_S2B0, "id_s2b0") || + gpio_request(IOT_GATE_IMX8_GPIO_S2B1, "id_s2b1") || + gpio_request(IOT_GATE_IMX8_GPIO_S2B2, "id_s2b2")) { + printf("%s: ID GPIO request failure\n", __func__); + return 1; + } + gpio_direction_input(IOT_GATE_IMX8_GPIO_S0B0); + gpio_direction_input(IOT_GATE_IMX8_GPIO_S0B1); + gpio_direction_input(IOT_GATE_IMX8_GPIO_S0B2); + gpio_direction_input(IOT_GATE_IMX8_GPIO_S1B0); + gpio_direction_input(IOT_GATE_IMX8_GPIO_S1B1); + gpio_direction_input(IOT_GATE_IMX8_GPIO_S1B2); + gpio_direction_input(IOT_GATE_IMX8_GPIO_S2B0); + gpio_direction_input(IOT_GATE_IMX8_GPIO_S2B1); + gpio_direction_input(IOT_GATE_IMX8_GPIO_S2B2); + + /* Get slot 0 card ID */ + revision = gpio_get_value(IOT_GATE_IMX8_GPIO_S0B0) | + gpio_get_value(IOT_GATE_IMX8_GPIO_S0B1) << 1 | + gpio_get_value(IOT_GATE_IMX8_GPIO_S0B2) << 2; + iot_gate_imx8_ext_ied_id[0] = revision; + + /* Get slot 1 card ID */ + revision = gpio_get_value(IOT_GATE_IMX8_GPIO_S1B0) | + gpio_get_value(IOT_GATE_IMX8_GPIO_S1B1) << 1 | + gpio_get_value(IOT_GATE_IMX8_GPIO_S1B2) << 2; + iot_gate_imx8_ext_ied_id[1] = revision; + + /* Get slot 2 card ID */ + revision = gpio_get_value(IOT_GATE_IMX8_GPIO_S2B0) | + gpio_get_value(IOT_GATE_IMX8_GPIO_S2B1) << 1 | + gpio_get_value(IOT_GATE_IMX8_GPIO_S2B2) << 2; + iot_gate_imx8_ext_ied_id[2] = revision; + + return 0; +} + +int board_fix_fdt(void *rw_fdt_blob) +{ + return 0; +} + +int extension_board_scan(struct list_head *extension_list) +{ + struct extension *extension = NULL; + int i; + int ret = 0; + + iot_gate_imx8_detect_ext(); /* Extended board detection */ + + switch(iot_gate_imx8_ext_id) { + case IOT_GATE_EXT_EMPTY: + break; + case IOT_GATE_EXT_CAN: + extension = calloc(1, sizeof(struct extension)); + snprintf(extension->name, sizeof(extension->name), + "IOT_GATE_EXT_CAN"); + break; + case IOT_GATE_EXT_IED: + extension = calloc(1, sizeof(struct extension)); + snprintf(extension->name, sizeof(extension->name), + "IOT_GATE_EXT_IED"); + snprintf(extension->overlay, sizeof(extension->overlay), + "imx8mm-cl-iot-gate-ied.dtbo"); + break; + case IOT_GATE_EXT_POE: + extension = calloc(1, sizeof(struct extension)); + snprintf(extension->name, sizeof(extension->name), + "IOT_GATE_EXT_POE"); + break; + case IOT_GATE_EXT_POEV2: + extension = calloc(1, sizeof(struct extension)); + snprintf(extension->name, sizeof(extension->name), + "IOT_GATE_EXT_POEV2"); + break; + default: + printf("IOT_GATE-iMX8 extension board: unknown\n"); + break; + } + + if (extension) { + snprintf(extension->owner, sizeof(extension->owner), + "Compulab"); + list_add_tail(&extension->list, extension_list); + ret = 1; + } else + return ret; + + iot_gate_imx8_update_pinmux(); + + iot_gate_imx8_update_ext_ied(); + for (i=0; iname, sizeof(extension->name), + "IOT_GATE_IMX8_CARD_ID_RS_485"); + break; + case IOT_GATE_IMX8_CARD_ID_RS_232: + extension = calloc(1, sizeof(struct extension)); + snprintf(extension->name, sizeof(extension->name), + "IOT_GATE_IMX8_CARD_ID_RS_232"); + break; + case IOT_GATE_IMX8_CARD_ID_CAN: + extension = calloc(1, sizeof(struct extension)); + snprintf(extension->name, sizeof(extension->name), + "IOT_GATE_IMX8_CARD_ID_CAN"); + snprintf(extension->overlay, sizeof(extension->overlay), + "imx8mm-cl-iot-gate-ied-can%d.dtbo", i); + break; + case IOT_GATE_IMX8_CARD_ID_TPM: + 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)) {