linux-kernel - [PATCH v2,0/3] tty/serial: meson_uart: add support for core clock handling

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Message-Id: <20170328092545.4644-1-hgkr.klein@gmail.com>
Date:   Tue, 28 Mar 2017 11:25:42 +0200
From:   Helmut Klein <hgkr.klein@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Helmut Klein <hgkr.klein@...il.com>, linux-clk@...r.kernel.org,
        linux-serial@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: [PATCH v2,0/3] tty/serial: meson_uart: add support for core clock handling

To be able to use the three none AO uarts of the s905 SoCs (uart_A, uart_B
& uart_C), the core clock has to be enabled. (see chapter 22.3 of the
public s905 data sheet) At least the u-boot of my s905 based media player
(netxeon minimx) doesn't do this. so the driver must do it.

This patch set does:
- exposes the clock ids to the dtb
- adds documentation for the dt-bindings of meson_uart
- adds the core clock handling to the driver

The patchset is based on the branch master of the repository in [1]

Changes since v1
- use git to produce the patch set
- added the clock ids for uart_B and uart_C

None of the available s905 dts use uart_A actively. So there is no patch
for any of the existing dts files.

[1] git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic.git

Helmut Klein (3):
  tty/serial: meson_uart: expose CLKID_UARTx
  tty/serial: meson_uart: add documentation for the dt-bindings
  tty/serial: meson_uart: add the core clock handling to the driver

 .../bindings/serial/amlogic,meson_uart.txt         | 25 ++++++++++++++++++++++
 drivers/clk/meson/gxbb.h                           |  6 +++---
 drivers/tty/serial/meson_uart.c                    | 10 +++++++++
 include/dt-bindings/clock/gxbb-clkc.h              |  3 +++
 4 files changed, 41 insertions(+), 3 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/serial/amlogic,meson_uart.txt

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2.11.0