From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ihAsU-00042c-GU for barebox@lists.infradead.org; Tue, 17 Dec 2019 11:19:01 +0000 Received: from dude02.hi.pengutronix.de ([2001:67c:670:100:1d::28] helo=dude02.pengutronix.de.) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1ihAsQ-0004Wc-N8 for barebox@lists.infradead.org; Tue, 17 Dec 2019 12:18:54 +0100 From: Lucas Stach Date: Tue, 17 Dec 2019 12:18:53 +0100 Message-Id: <20191217111854.3164-2-l.stach@pengutronix.de> In-Reply-To: <20191217111854.3164-1-l.stach@pengutronix.de> References: <20191217111854.3164-1-l.stach@pengutronix.de> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 2/3] ARM: zii-imx8mq-dev: add DT fixups To: barebox@lists.infradead.org There are only two fixups we need to apply at the moment: - The 27" RMB3 based unit has a eGalax Touchscreen instead of Synaptics. - The 10.1" SCU/CCU unit has no DEB and thus no switch, but instead the i210 ethernet is routed to the external connector directly. Signed-off-by: Lucas Stach --- arch/arm/boards/zii-imx8mq-dev/board.c | 138 +++++++++++++++++++++++++ arch/arm/dts/imx8mq-zii-ultra.dtsi | 10 ++ 2 files changed, 148 insertions(+) diff --git a/arch/arm/boards/zii-imx8mq-dev/board.c b/arch/arm/boards/zii-imx8mq-dev/board.c index dcf945db495a..0be68423d9bf 100644 --- a/arch/arm/boards/zii-imx8mq-dev/board.c +++ b/arch/arm/boards/zii-imx8mq-dev/board.c @@ -11,6 +11,15 @@ #include #include #include +#include "../zii-common/pn-fixup.h" + +#define LRU_FLAG_EGALAX BIT(0) +#define LRU_FLAG_NO_DEB BIT(1) + +struct zii_imx8mq_dev_lru_fixup { + struct zii_pn_fixup fixup; + unsigned int flags; +}; static int zii_imx8mq_dev_init(void) { @@ -32,3 +41,132 @@ static int zii_imx8mq_dev_init(void) return 0; } device_initcall(zii_imx8mq_dev_init); + +static int zii_imx8mq_dev_fixup_egalax_ts(struct device_node *root, void *ctx) +{ + struct device_node *np; + + /* + * The 27" unit has a EETI eGalax touchscreen instead of the + * Synaptics RMI4 found on other units. + */ + pr_info("Enabling eGalax touchscreen instead of RMI4\n"); + + np = of_find_compatible_node(root, NULL, "syna,rmi4-i2c"); + if (!np) + return -ENODEV; + + of_device_disable(np); + + np = of_find_compatible_node(root, NULL, "eeti,exc3000"); + if (!np) + return -ENODEV; + + of_device_enable(np); + + return 0; +} + +static int zii_imx8mq_dev_fixup_deb_internal(void) +{ + struct device_node *np, *aliases; + struct device_d *dev; + + /* + * In the internal DT remove the complete FEC hierarchy and move the + * i210 to be the eth0 interface to allow network boot to work without + * rewriting all the boot scripts. + */ + aliases = of_find_node_by_path("/aliases"); + if (!aliases) + return -ENODEV; + + np = of_find_compatible_node(NULL, NULL, "fsl,imx8mq-fec"); + if (!np) + return -ENODEV; + + of_device_disable(np); + + of_property_write_string(aliases, "ethernet1", np->full_name); + + dev = get_device_by_device_node(np); + if (!dev) + return -ENODEV; + + unregister_device(dev); + + np = of_find_node_by_name(NULL, "i210@0"); + if (!np) + return -ENODEV; + + of_property_write_string(aliases, "ethernet0", np->full_name); + + /* Refresh the internal aliases list from the patched DT */ + of_alias_scan(); + + return 0; +} + +static int zii_imx8mq_dev_fixup_deb(struct device_node *root, void *ctx) +{ + struct device_node *np; + + /* + * In the kernel DT remove all devices from the DEB, which isn't + * present on this system. + */ + np = of_find_compatible_node(root, NULL, "marvell,mv88e6085"); + if (!np) + return -ENODEV; + + of_device_disable(np); + + np = of_find_compatible_node(root, NULL, "zii,rave-wdt"); + if (!np) + return -ENODEV; + + of_device_disable(np); + + return 0; +} + +static void zii_imx8mq_dev_lru_fixup(const struct zii_pn_fixup *context) +{ + const struct zii_imx8mq_dev_lru_fixup *fixup = + container_of(context, struct zii_imx8mq_dev_lru_fixup, fixup); + + if (fixup->flags & LRU_FLAG_EGALAX) + of_register_fixup(zii_imx8mq_dev_fixup_egalax_ts, NULL); + + if (fixup->flags & LRU_FLAG_NO_DEB) { + zii_imx8mq_dev_fixup_deb_internal(); + of_register_fixup(zii_imx8mq_dev_fixup_deb, NULL); + } +} + +#define ZII_IMX8MQ_DEV_LRU_FIXUP(__pn, __flags) \ + { \ + { __pn, zii_imx8mq_dev_lru_fixup }, \ + __flags \ + } + +static const struct zii_imx8mq_dev_lru_fixup zii_imx8mq_dev_lru_fixups[] = { + ZII_IMX8MQ_DEV_LRU_FIXUP("00-5131-02", LRU_FLAG_EGALAX), + ZII_IMX8MQ_DEV_LRU_FIXUP("00-5131-03", LRU_FLAG_EGALAX), + ZII_IMX8MQ_DEV_LRU_FIXUP("00-5170-01", LRU_FLAG_NO_DEB), +}; + +/* + * This initcall needs to be executed before coredevices, so we have a chance + * to fix up the devices with the correct information. + */ +static int zii_imx8mq_dev_process_fixups(void) +{ + if (!of_machine_is_compatible("zii,imx8mq-ultra")) + return 0; + + zii_process_lru_fixups(zii_imx8mq_dev_lru_fixups); + + return 0; +} +postmmu_initcall(zii_imx8mq_dev_process_fixups); diff --git a/arch/arm/dts/imx8mq-zii-ultra.dtsi b/arch/arm/dts/imx8mq-zii-ultra.dtsi index 6180f21ab0a4..50bad9b1a27e 100644 --- a/arch/arm/dts/imx8mq-zii-ultra.dtsi +++ b/arch/arm/dts/imx8mq-zii-ultra.dtsi @@ -22,6 +22,11 @@ }; }; + device-info { + nvmem-cells = <&lru_part_number>; + nvmem-cell-names = "lru-part-number"; + }; + aliases { ethernet0 = &fec1; ethernet1 = &i210; @@ -64,6 +69,11 @@ &uart2 { rave-sp { eeprom@a4 { + lru_part_number: lru-part-number@21 { + reg = <0x21 15>; + read-only; + }; + mac_address_0: mac-address@180 { reg = <0x180 6>; }; -- 2.20.1 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox