Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751670AbdFIJtb (ORCPT ); Fri, 9 Jun 2017 05:49:31 -0400 Received: from mail-wr0-f172.google.com ([209.85.128.172]:35895 "EHLO mail-wr0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751539AbdFIJt2 (ORCPT ); Fri, 9 Jun 2017 05:49:28 -0400 From: Neil Armstrong To: gregkh@linuxfoundation.org, khilman@baylibre.com Cc: Neil Armstrong , hgkr.klein@gmail.com, linux-serial@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v4 0/7] tty/serial: meson_uart: add support for core clock handling Date: Fri, 9 Jun 2017 11:49:09 +0200 Message-Id: <1497001756-942-1-git-send-email-narmstrong@baylibre.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2508 Lines: 56 This patchset is a re-spin of Helmut Klein's v3 patchset at [0]. Initially, the original patchset was made to enable usage on the non-AO UARTS not enabled by the Bootloader (uart_B and uart_C), but the patchset needed an overall change to have clean and stable DT bindings. The Amlogic Meson UART Driver did not have stable DT bindings and mismatched clock handling on non-AO UARTs since these "EE" UARTs needs a clock gate to be ungated to works correctly. In the same way, the AO UARTs does not need gating and can be used as Early Consoles. In the same time, the UART Interfaces can take clock input for the baudrate generate from either the external Xtal or the internal Bus Clock (clk81). So new bindings was necessary to meet these requirements and the DT maintainers requirements. The "legacy" binding actually used in the driver is left until all the DT files are switched to the new bindings. The GX DT has been tested, but the last 4 Meson6/Meson8/b are only compile-tested, and testing is welcome. Thus only the first 3 patches can be merged until the Meson6/Meson8/b are formally tested. It must be noted that the meson6 cannot work today except using an early console since the UART driver could not probe without a clocks property. [0] 20170331165437.26227-1-hgkr.klein@gmail.com Helmut Klein (3): dt-bindings: serial: Add bindings for the Amlogic Meson UARTs tty/serial: meson_uart: update to stable bindings ARM64: dts: meson-gx: use stable UART bindings with correct gate clock Neil Armstrong (4): ARM: dts: meson: use meson6 UART compatible like other nodes ARM: dts: meson6: switch to new bindings for UART nodes ARM: dts: meson8: switch to new bindings for UART nodes ARM: dts: meson8b: switch to new bindings for UART nodes .../bindings/serial/amlogic,meson-uart.txt | 38 +++++++ arch/arm/boot/dts/meson.dtsi | 8 +- arch/arm/boot/dts/meson6.dtsi | 28 ++++++ arch/arm/boot/dts/meson8.dtsi | 23 ++++- arch/arm/boot/dts/meson8b.dtsi | 23 ++++- arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 12 +-- arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 25 +++++ arch/arm64/boot/dts/amlogic/meson-gxl.dtsi | 25 +++++ drivers/tty/serial/meson_uart.c | 109 +++++++++++++++++++-- 9 files changed, 266 insertions(+), 25 deletions(-) create mode 100644 Documentation/devicetree/bindings/serial/amlogic,meson-uart.txt -- 1.9.1