linux-kernel - [PATCH v5 0/2] add NXP LINFlexD UART clock support for S32G2/S32G3

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Message-ID: <20241118154449.3895692-1-ciprianmarian.costea@oss.nxp.com>
Date: Mon, 18 Nov 2024 17:44:46 +0200
From: Ciprian Costea <ciprianmarian.costea@....nxp.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chester Lin <chester62515@...il.com>
Cc: linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	NXP S32 Linux <s32@....com>,
	Christophe Lizzi <clizzi@...hat.com>,
	Alberto Ruiz <aruizrui@...hat.com>,
	Enric Balletbo <eballetb@...hat.com>,
	Ciprian Marian Costea <ciprianmarian.costea@....nxp.com>
Subject: [PATCH v5 0/2] add NXP LINFlexD UART clock support for S32G2/S32G3

From: Ciprian Marian Costea <ciprianmarian.costea@....nxp.com>

LINFlexD driver was working on S32 based boards without clock management
because the downstream bootloaders (TF-A [1] and U-Boot [2]) were
performing the LINFlexD clock management.

LINFlexD driver from Linux Kernel should manage its clocks independently
and not rely on a previous bootloader configuration.

[1] https://github.com/nxp-auto-linux/arm-trusted-firmware
[2] https://github.com/nxp-auto-linux/u-boot

Changes in V5:
- Use 'devm_add_action_or_reset' to disable LINFlexD clocks if errors
occur on the probe path.

Changes in V4:
- Switched clock management to 'clk bulk' API usage
- Added more context for this patchset

Changes in V3:
- Fixed an error reported by 'dt_bindings_check'

Changes in V2:
- Updated bindings by adding more information related to required
LINFlexD clocks

Ciprian Marian Costea (2):
  dt-bindings: serial: fsl-linflexuart: add clock definitions
  serial: fsl_linflexuart: add clock management

 .../bindings/serial/fsl,s32-linflexuart.yaml  | 16 ++++
 drivers/tty/serial/fsl_linflexuart.c          | 95 ++++++++++++++++---
 2 files changed, 97 insertions(+), 14 deletions(-)

-- 
2.45.2