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* Initial commit BPi R2: Currently working/not working: - u-boot: - builds with minor issues - patching and cleanup happens on 'https://github.com/chwe17/u-boot-mt' - next (https://github.com/frank-w/BPI-R2-4.14) - boots with minor issues - ETH doesn't work with nm - sata works - no wifi (needs driver from: https://github.com/frank-w/BPI-R2-4.4) - USB not working (xhci-mtk 1a1c0000.usb: fail to get vbus) needs investigation - appended device tree is needed due to u-boot doesn't work with fdt (kernelpacking needs adjustemts e.g. cat zImage dtb > zImage-dtb - dev (kernel.org master) - untested, needs adjustments in config (e.g. CONFIG_LOCALVERSION="") - since no defconfig is available config is based on frank-w 4.16 Kernel - Kernel builds without issues - manual packing of kernel and dtb similar to next The board boots, serial console is available but everything else must be expected as not working! - to do: - u-boot needs a cleanup - binary blobs needs investigation - eMMC is **not tested** and needs for sure adjustements! (don't try nand-sata-install!!!) - bootscript isn't tested (only manual boot over u-boot console at the moment) - both kernelconfigs aren't 'armbian standard' modules need to be adjusted Only use it when you know're familiar with u-boot commands! * Small fixes, add bootscript - add bootscript for patched u-boot (needs patching of u-boot, currently under investigation and not working properly) - revert cat zImage dtb > zImage-dtb (cause not working) - first cleanup of dev kernelconfig (remove CONFIG_LOCALVERSION="") * Minor fixup -kernelconfig for next was adjustet so that USB is recognized -firt bootscripts was written to boot with source command (doesn't work 100% reliable) -slightly adjustd boardconfig (e.g. bootscript) must still be considered as early wip! * small update (FDT works now) -working bootscript -adjusted boardconfig -earlyprintk activated in kernelconfig * First attempt to get ETH working -all interfaces are bridged together -performance sucks at the moment (not clear if it's related to insane network configuration or I miss something obvious... :P ) * Major update (see below for changes): - 4.14 kernel was dropped due to https://forum.armbian.com/topic/7296-bananapi-r2-csc-mt7623-as-new-boardfamily/?do=findComment&comment=55194 and following - boot.cmd was adjusted to 'clean' mainline behaviour - next build opition and its defaultconfg was removed (at the moment dev only) - rework of the network default configuration - default configuration will be over network.d **not** NetworkManager - per default all wired interfaces are bridged together to br0 (still wip) - old 'interfaces' configuration was removed - boardconfig is adjusted (no desktop until I've prove that HDMI works) - what works/ not works: - board boots up without manual u-boot hacking - SATA, USB3 (massstorage) is tested and works without issues - due to rework of network configuration this is still wip and must be considered as 'not working' * moved to network.d for configuration of wired network - renamed bsp packages - blacklist wired interfaces for NetworkManager - defined all wired interfaces as br0 in systemd/network - defined networkd als default renderer for bionic (not tested yet!) * The houskeeping commit: - BOARDFAMILY was renamed to mt7623 instead of mt7623n (including patchfolders etc.) - Network.d has no fully control over wired networkes (block NM from controll, start networkd on firstrun etc.) - Further cleanup kernelconfig - CPU temp is visible from userspace - missed switch driver loaded - cryptodrivers are there (not tested) - still a bunch of work * Add DMA mem alloc patch -under testing! * Add next option (4.17.y) stick dev to master (4.18-rc1 untested) * minor fixes: - solve kconfig issues between 4.17 and 4.18 - stick next branch to 4.18 - first attempts to bring up gmac2 (doesn't work currently) * switch to upstream u-boot - fix ext4 dependency in patch series - kernelpacking currently broken * add bootz & cmd_ext4 * resolved merge conflict * apply ugly u-boot patch, fix bootscript * remove unneeded stuff, apply forgotten stuff * update config for dev & clean up boardconf (remove xenial) * - drop dev and next, move into default. There is no intention to provide stock kernel - fixed board description, renamed to WIP, where it can be merged later - packing boot firmware to the u-boot package - docker dependencies (aufs will be added later. not essential) - attached to 4.19.y - loading armbianEnv.txt - UUID support (tested) - enabled ZRAM (tested) - enabled eMMC install (not quite working properly yet) - Bionic has some issues with systemd networking. * gov to ondemand (thermals are conservative anyway), remove unneeded kernelconfigs * Added AUFS, remove debug from kernel boot parameters, add ath10 mPCI support (which works) * add power-off-key and rtc * Added onboard wireless, but it's enabling is disabled by default. Too fragile. * Change to CSC target
58 lines
2.2 KiB
Diff
58 lines
2.2 KiB
Diff
From patchwork Tue Oct 2 06:13:53 2018
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Content-Type: text/plain; charset="utf-8"
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MIME-Version: 1.0
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Content-Transfer-Encoding: 7bit
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Subject: [U-Boot,
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16/20] serial: 16550: allow the driver to support MediaTek serial
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X-Patchwork-Submitter: Ryder Lee <ryder.lee@mediatek.com>
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X-Patchwork-Id: 977706
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Message-Id: <ed6cd147dd628fa30748f62a063849433fe6254b.1538460580.git.ryder.lee@mediatek.com>
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To: Tom Rini <trini@konsulko.com>, Simon Glass <sjg@chromium.org>, Albert
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Aribaud <albert.u.boot@aribaud.net>
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Cc: Steven Liu <steven.liu@mediatek.com>,
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Roy Luo <cheng-hao.luo@mediatek.com>, Sean Wang <sean.wang@mediatek.com>,
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Weijie Gao <weijie.gao@mediatek.com>, u-boot@lists.denx.de
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Date: Tue, 2 Oct 2018 14:13:53 +0800
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From: Ryder Lee <ryder.lee@mediatek.com>
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List-Id: U-Boot discussion <u-boot.lists.denx.de>
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MediaTek UARTs has a highspeed register which influences the calcualtion
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of the divisor. This patch adds an extra control in ns16550.c to suuport
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MediaTek SoCs.
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Note that we don't support the baudrate larger than 115200 currently.
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Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
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---
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drivers/serial/ns16550.c | 10 ++++++++++
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1 file changed, 10 insertions(+)
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diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
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index f9041aa..f5410af 100644
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--- a/drivers/serial/ns16550.c
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+++ b/drivers/serial/ns16550.c
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@@ -148,6 +148,13 @@ int ns16550_calc_divisor(NS16550_t port, int clock, int baudrate)
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static void NS16550_setbrg(NS16550_t com_port, int baud_divisor)
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{
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+#ifdef CONFIG_ARCH_MEDIATEK
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+ /*
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+ * MediaTek UARTs has an extra highspeed register.
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+ * We need to clear it if baudrate <= 115200.
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+ */
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+ serial_out(0, &com_port->reg9);
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+#endif
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serial_out(UART_LCR_BKSE | UART_LCRVAL, &com_port->lcr);
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serial_out(baud_divisor & 0xff, &com_port->dll);
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serial_out((baud_divisor >> 8) & 0xff, &com_port->dlm);
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@@ -261,6 +268,9 @@ static inline void _debug_uart_init(void)
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serial_dout(&com_port->mcr, UART_MCRVAL);
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serial_dout(&com_port->fcr, UART_FCR_DEFVAL);
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+#ifdef CONFIG_ARCH_MEDIATEK
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+ serial_dout(&com_port->reg9, 0);
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+#endif
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serial_dout(&com_port->lcr, UART_LCR_BKSE | UART_LCRVAL);
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serial_dout(&com_port->dll, baud_divisor & 0xff);
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serial_dout(&com_port->dlm, (baud_divisor >> 8) & 0xff);
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