linux-kernel - [PATCH v2 0/4] stm32 usart add fifo threshold configuration

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Message-ID: <20210413174015.23011-1-erwan.leray@foss.st.com>
Date:   Tue, 13 Apr 2021 19:40:11 +0200
From:   Erwan Le Ray <erwan.leray@...s.st.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>, Rob Herring <robh+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>
CC:     <linux-serial@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Erwan Le Ray <erwan.leray@...s.st.com>,
        Fabrice Gasnier <fabrice.gasnier@...s.st.com>,
        Valentin Caron <valentin.caron@...s.st.com>
Subject: [PATCH v2 0/4] stm32 usart add fifo threshold configuration

This series adds the support for two optional DT properties to configure
RX and TX FIFO thresholds:
 - rx-threshold
 - tx-threshold
This replaces hard-coded 8 bytes threshold. No functional change expected
if unspecified (keep 8 as default).

Changes in v2:
Change added properties naming and factorize it in serial.yaml as proposed
by Rob Herring. 

Erwan Le Ray (3):
  dt-bindings: serial: add RX and TX FIFO properties
  dt-bindings: serial: stm32: override FIFO threshold properties
  dt-bindings: serial: 8250: update TX FIFO trigger level

Fabrice Gasnier (1):
  serial: stm32: add FIFO threshold configuration

 .../devicetree/bindings/serial/8250.yaml      |  1 -
 .../devicetree/bindings/serial/serial.yaml    | 10 ++++
 .../bindings/serial/st,stm32-uart.yaml        | 27 +++++++++-
 drivers/tty/serial/stm32-usart.c              | 53 ++++++++++++++++---
 drivers/tty/serial/stm32-usart.h              |  8 +--
 5 files changed, 85 insertions(+), 14 deletions(-)

-- 
2.17.1