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This commit adds support for the MT7623A-based UniElec U7623-02 router,
with eMMC storage and 512MB RAM. The router can be delivered with NAND
Flash and more memory, but I only have access to the one configuration.
The DTS is structured in such a way that adding support for
more/different storage/memory should be straight forward.
The device has the following specifications:
* MT7623A (quad-core, 1.3 GHz)
* 512MB RAM (DDR3)
* 8GB storage (eMMC 4.5)
* 2x normal miniPCIe slots
* 1x miniPCIe slot that is connected via an internal USB OTG port
* 5x 1Gbps Ethernet (MT7530 switch)
* 1x UART header
* 1x USB 3.0 port
* 1x SATA 3.0
* 1x 40P*0.5mm FPC for MIPI LCD
* 1x SIM slot
* 12x LEDs (2 GPIO controlled)
* 1x reset button
* 1x DC jack for main power (12V)
The following has been tested and is working:
* Ethernet switch
* miniPCIe slots (tested with Wi-Fi cards)
* USB 3.0 port
* sysupgrade
* reset button
Not working:
* The miniPCIe connected via USB OTG. For the port to work, some MUSB
glue must be added. I am currently in the process of porting the glue
from the vendor SDK.
Not tested:
* SATA 3.0
* MIPI LCD
Installation:
The board ships with u-boot, and the first installation needs to be done
via the bootloader using tftp. Step number one is to update the MBR of
the eMMC, as the one that ships with the device is broken. Since the
device can ship with different storage sizes, I will not provide the
exact steps for creating a valid MBR. However, I have made some
assumptions about the disk layout - there must be one 8MB recovery
partition (FAT32) and a partition for the rootfs (Linux).
The board loads the kernel from block 0xA00 (2560) and I have reserved
32MB for the kernel (65536 blocks). I have aligned the partitions on the
erase block size (4096 byte), so the recovery partition must start on
block 69632 and end on 86016 (16385 sectors). The rootfs is assumed to
start on sector 90112.
In order to install the mbr, you run the following commands from the
u-boot command line:
* tftpboot ${loadaddr} <name of mbr file>
* mmc device 0
* mmc write ${loadaddr} 0x00 1
Run the following commands to install + boot OpenWRT:
* tftpboot ${loadaddr} openwrt-mediatek-mt7623-7623a-unielec-u7623-02-emmc-512m-squashfs-sysupgrade-emmc.bin.gz
* run boot_wr_img
* run boot_rd_img
* bootm
Recovery:
In order to recover the router, you need to follow the installation
steps above (no need to replace MBR).
Notes:
* F2FS is used as the overlay filesystem.
* The device does not ship with any valid MAC address, so a random
address has to be generated. As a work-around, I write the initial
random MAC to a file on the recovery partition. The MAC of the WAN
interface is set to the MAC-address contained in this file on each boot,
and the address of the LAN-interfaces are WAN + 1. The MAC file is kept
across sysupgrade/firstboot.
My approach is slightly different than what the stock image does. The
first fives bytes of the MAC addresses in the stock image are static,
and then the last byte is random. I believe it is better to create fully
random MAC addresses.
* In order to support the miniPCIe-slots, I needed to add missing
pcie-nodes to mt7623.dtsi. The nodes are just c&p from the upstream
dtsi.
* One of the USB3.0 phys (u3phy2) on the board can be used as either USB
or PCI, and one of the wifi-cards is connected to this phy. In order to
support switching the phy from USB to PCI, I needed to patch the
phy-driver. The patch is based on a rejected (at least last time I
checked) PCI-driver submitted to the linux-mediatek mailing list.
* The eMMC is configured to boot from the user area, and according to
the data sheet of the eMMC this value can't be changed.
* I tried to structure the MBR more nicely and use for example a
FAT32-parition for the kernel, so that we don't need to write/read from
some offset. The bootloader does not support reading from
FAT32-paritions. While the command (fatload) is there, it just throws an
error when I try to use it.
* I will submit and hope to get the DTS for the device accepted
upstream. If and when that happens, I will update the patches
accordingly.
Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>
72 lines
2.1 KiB
Diff
72 lines
2.1 KiB
Diff
From 28f9a5e2a3f5441ab5594669ed82da11e32277a9 Mon Sep 17 00:00:00 2001
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From: Kristian Evensen <kristian.evensen@gmail.com>
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Date: Mon, 30 Apr 2018 14:38:01 +0200
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Subject: [PATCH] phy: phy-mtk-tphy: Add hifsys-support
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---
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drivers/phy/mediatek/phy-mtk-tphy.c | 20 ++++++++++++++++++++
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1 file changed, 20 insertions(+)
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diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c
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index 721a2a1c9..0cb1cea53 100644
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--- a/drivers/phy/mediatek/phy-mtk-tphy.c
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+++ b/drivers/phy/mediatek/phy-mtk-tphy.c
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@@ -22,6 +22,8 @@
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#include <linux/of_address.h>
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#include <linux/phy/phy.h>
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#include <linux/platform_device.h>
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+#include <linux/mfd/syscon.h>
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+#include <linux/regmap.h>
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/* version V1 sub-banks offset base address */
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/* banks shared by multiple phys */
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@@ -259,6 +261,9 @@
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#define RG_CDR_BIRLTD0_GEN3_MSK GENMASK(4, 0)
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#define RG_CDR_BIRLTD0_GEN3_VAL(x) (0x1f & (x))
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+#define HIF_SYSCFG1 0x14
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+#define HIF_SYSCFG1_PHY2_MASK (0x3 << 20)
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+
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enum mtk_phy_version {
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MTK_PHY_V1 = 1,
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MTK_PHY_V2,
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@@ -302,6 +307,7 @@ struct mtk_tphy {
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struct clk *u3phya_ref; /* reference clock of usb3 anolog phy */
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const struct mtk_phy_pdata *pdata;
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struct mtk_phy_instance **phys;
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+ struct regmap *hif;
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int nphys;
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};
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@@ -594,6 +600,10 @@ static void pcie_phy_instance_init(struct mtk_tphy *tphy,
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if (tphy->pdata->version != MTK_PHY_V1)
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return;
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+ if (tphy->hif)
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+ regmap_update_bits(tphy->hif, HIF_SYSCFG1,
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+ HIF_SYSCFG1_PHY2_MASK, 0);
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+
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tmp = readl(u3_banks->phya + U3P_U3_PHYA_DA_REG0);
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tmp &= ~(P3A_RG_XTAL_EXT_PE1H | P3A_RG_XTAL_EXT_PE2H);
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tmp |= P3A_RG_XTAL_EXT_PE1H_VAL(0x2) | P3A_RG_XTAL_EXT_PE2H_VAL(0x2);
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@@ -1008,6 +1018,16 @@ static int mtk_tphy_probe(struct platform_device *pdev)
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tphy->u3phya_ref = NULL;
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}
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+ if (of_find_property(np, "mediatek,phy-switch", NULL)) {
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+ tphy->hif = syscon_regmap_lookup_by_phandle(np,
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+ "mediatek,phy-switch");
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+ if (IS_ERR(tphy->hif)) {
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+ dev_err(&pdev->dev,
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+ "missing \"mediatek,phy-switch\" phandle\n");
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+ return PTR_ERR(tphy->hif);
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+ }
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+ }
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+
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port = 0;
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for_each_child_of_node(np, child_np) {
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struct mtk_phy_instance *instance;
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--
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2.14.1
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