From: sashiko-bot@kernel.org
To: "Michael Zaidman" <michael.zaidman@gmail.com>
Cc: linux-serial@vger.kernel.org
Subject: Re: [PATCH v2 07/15] HID: ft260: uart: enable flow control
Date: Fri, 30 Oct 2026 22:47:30 +0000 [thread overview]
Message-ID: <sashiko-outbox-191593@kernel.org> (raw)
In-Reply-To: <20261030223637.86907-8-michael.zaidman@gmail.com>
> The FT260 is a full-speed USB device. Interrupt transfers poll at 1 ms
> with a 64-byte max packet size, so the theoretical UART payload ceiling
> is about 60 kB/s (~600 kbaud in 8N1). The chip advertises baud rates
> above 1M and small transfers can work there, but large transfers are not
> reliable above 460800 baud without flow control.
>
> Stop forcing FT260_UART_CFG_FLOW_CTRL_NONE after termios setup. Honor
> CRTSCTS (RTS/CTS) and IXON/IXOFF (XON/XOFF) when configuring the UART.
>
> Tested at 1500000 baud both directions against an FT2232H with XON/XOFF
> and with RTS/CTS (~2.9 MB transfers, no data corruption).
>
> Signed-off-by: Michael Zaidman <michael.zaidman@gmail.com>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261030223637.86907-1-michael.zaidman@gmail.com?part=7
next prev parent reply other threads:[~2026-10-30 22:47 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-30 22:36 [PATCH v2 00/15] HID: ft260: add UART and GPIO support, plus I2C fixes Michael Zaidman
2026-10-30 22:36 ` [PATCH v2 01/15] HID: ft260: add serial driver Michael Zaidman
2026-10-30 23:00 ` sashiko-bot
2026-10-30 22:36 ` [PATCH v2 02/15] HID: ft260: uart: fix the " Michael Zaidman
2026-10-30 23:03 ` sashiko-bot
2026-10-30 22:36 ` [PATCH v2 03/15] HID: ft260: add GPIO support Michael Zaidman
2026-10-30 22:53 ` sashiko-bot
2026-10-30 22:36 ` [PATCH v2 04/15] HID: ft260: i2c: reduce driver module loading time Michael Zaidman
2026-10-30 22:44 ` sashiko-bot
2026-10-30 22:36 ` [PATCH v2 05/15] HID: ft260: i2c: silence sysfs store big-numbers Michael Zaidman
2026-10-30 22:47 ` sashiko-bot
2026-10-30 22:36 ` [PATCH v2 06/15] HID: ft260: i2c: reduce bus-error message severity Michael Zaidman
2026-10-30 22:44 ` sashiko-bot
2026-10-30 22:36 ` [PATCH v2 07/15] HID: ft260: uart: enable flow control Michael Zaidman
2026-10-30 22:47 ` sashiko-bot [this message]
2026-10-30 22:36 ` [PATCH v2 08/15] HID: ft260: uart: add modem pins control via ioctl Michael Zaidman
2026-10-30 22:55 ` sashiko-bot
2026-10-30 22:36 ` [PATCH v2 09/15] HID: ft260: group sysfs attrs per HID interface Michael Zaidman
2026-10-30 22:48 ` sashiko-bot
2026-10-30 22:36 ` [PATCH v2 10/15] HID: ft260: i2c: fix large write transaction failure Michael Zaidman
2026-10-30 22:43 ` sashiko-bot
2026-10-30 22:36 ` [PATCH v2 11/15] HID: ft260: workaround for TN_189 errata endpoint STALL after enumeration Michael Zaidman
2026-10-30 22:59 ` sashiko-bot
2026-10-30 22:36 ` [PATCH v2 12/15] HID: ft260: i2c: abort in-flight transfers with STOP before reset Michael Zaidman
2026-10-30 22:49 ` sashiko-bot
2026-10-30 22:36 ` [PATCH v2 13/15] HID: ft260: i2c: reject an I2C clock outside the supported range Michael Zaidman
2026-10-30 22:47 ` sashiko-bot
2026-10-30 22:36 ` [PATCH v2 14/15] HID: ft260: i2c: fix i2c_reset sysfs store return value Michael Zaidman
2026-10-30 22:48 ` sashiko-bot
2026-10-30 22:36 ` [PATCH v2 15/15] HID: ft260: i2c: recover a bus held by a slave Michael Zaidman
2026-10-30 22:59 ` sashiko-bot
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