linux-kernel - [PATCH v4 0/3] J7200: Add support for GPIO and higher speed modes in MMCSD subsystems

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Message-ID: <20210128152744.12439-1-a-govindraju@ti.com>
Date:   Thu, 28 Jan 2021 20:57:41 +0530
From:   Aswath Govindraju <a-govindraju@...com>
To:     unlisted-recipients:; (no To-header on input)
CC:     Lokesh Vutla <lokeshvutla@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Sekhar Nori <nsekhar@...com>, Faiz Abbas <faiz_abbas@...com>,
        Aswath Govindraju <a-govindraju@...com>,
        Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v4 0/3] J7200: Add support for GPIO and higher speed modes in MMCSD subsystems

The following series of patches
- Add support for GPIO subsystem in main and wakeup domains.
- Add voltage regulator device tree nodes and their corresponding pinmux
  to support power cycle and voltage switch required for UHS-I modes
- sets respective tags in sdhci0 node to support higher speeds
- remove no-1-8-v tag from sdhci1 node to support UHS-I modes

performance test logs using EXT4 filesystem
- For eMMC HS400 speed mode,
  https://pastebin.ubuntu.com/p/gDxBCwtkt8/  
- For SD SDR104 speed mode,
  https://pastebin.ubuntu.com/p/tHYTn2wxwg/  

Changes since v3:
- Removed patch (1 in v3).
- Rebased and included patches that add support for GPIO from series [1].
- Re-ran the performace tests for SD and eMMC.

Changes since v2:
- Added main_gpio0 DT node
- Added voltage regulator device tree nodes required to support UHS-I modes

Changes since v1:
- squashed the two patches into one
- added performance logs for the above mentioned speed modes

Aswath Govindraju (1):
  arm64: dts: ti: k3-j7200: Add support for higher speed modes in MMCSD
    subsystems

[1] - https://lkml.org/lkml/2020/11/17/1489

Faiz Abbas (2):
  arm64: dts: ti: k3-j7200: Add gpio nodes
  arm64: dts: ti: k3-j7200-common-proc-board: Disable unused gpio
    modules

 .../dts/ti/k3-j7200-common-proc-board.dts     | 47 ++++++++++++
 arch/arm64/boot/dts/ti/k3-j7200-main.dtsi     | 75 ++++++++++++++++++-
 .../boot/dts/ti/k3-j7200-mcu-wakeup.dtsi      | 34 +++++++++
 3 files changed, 155 insertions(+), 1 deletion(-)

-- 
2.17.1