linux-kernel - [PATCH 0/2] tty: serial: samsung: Serial fixes for Apple A7-A11 SoCs

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Message-ID: <20240907111431.2970-1-towinchenmi@gmail.com>
Date: Sat,  7 Sep 2024 19:06:43 +0800
From: Nick Chan <towinchenmi@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org
Cc: asahi@...ts.linux.dev,
	Nick Chan <towinchenmi@...il.com>
Subject: [PATCH 0/2] tty: serial: samsung: Serial fixes for Apple A7-A11 SoCs

Hi,

This series fixes issues with serial on A7-A11 SoCs. The changes do not
seem to affect existing M1 and up users so they can be applied
unconditionally.

Firstly, these SoCs require 32-bit writes on the serial port. This only
manifested in earlycon as reg-io-width in device tree is consulted for
normal serial writes.

Secondly, A7-A9 SoCs seems to use different bits for RXTO and RXTO
enable. Accessing these bits in addition to the original RXTO and RXTO
enable bits will allow serial rx to work correctly on those SoCs.

Nick Chan

---

Nick Chan (2):
  tty: serial: samsung: Fix A7-A11 serial earlycon SError
  tty: serial: samsung: Fix serial rx on Apple A7-A9

 drivers/tty/serial/samsung_tty.c | 23 ++++++++++++++++-------
 include/linux/serial_s3c.h       | 18 +++++++++++-------
 2 files changed, 27 insertions(+), 14 deletions(-)

base-commit: 9aaeb87ce1e966169a57f53a02ba05b30880ffb8
-- 
2.46.0