linux-kernel - [PATCH v4 0/3] Add Broadcom STB memory controller driver

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Message-Id: <20220812173125.2410536-1-f.fainelli@gmail.com>
Date:   Fri, 12 Aug 2022 10:31:22 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-kernel@...ts.infradead.org (moderated list:BROADCOM BCM7XXX
        ARM ARCHITECTURE),
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS)
Subject: [PATCH v4 0/3] Add Broadcom STB memory controller driver

Hi Krzysztof,

This small patch series adds basic support for controlling self-refresh
power down on Broadcom STB memory controllers. We might be able to
contribute more features to the memory controller driver in the future
like accurate reporting of the memory type, timings, and possibly some
performance counters.

Changes in v4:

- drop unnecessary owner assignment for the platform_driver
- use pm_ptr() as directed

Changes in v3:

- made 'frequency' property optional to avoid introducing warnings for
  existing BMIPS and BCM7445 DTS files
- updated sysfs document to use a shorter and universal path

Changes in v2:

- merged the v1 first two patches
- added a sysfs document describing attributes exposed
- addressed feedback from Krzysztof regarding style and API usage

Florian Fainelli (3):
  dt-bindings: memory-controller: Document Broadcom STB MEMC
  Documentation: sysfs: Document Broadcom STB memc sysfs knobs
  memory: Add Broadcom STB memory controller driver

 .../ABI/testing/sysfs-platform-brcmstb-memc   |  15 +
 .../bindings/arm/bcm/brcm,brcmstb.txt         |  11 +-
 .../brcm,brcmstb-memc-ddr.yaml                |  52 +++
 drivers/memory/Kconfig                        |   9 +
 drivers/memory/Makefile                       |   1 +
 drivers/memory/brcmstb_memc.c                 | 301 ++++++++++++++++++
 6 files changed, 380 insertions(+), 9 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-platform-brcmstb-memc
 create mode 100644 Documentation/devicetree/bindings/memory-controllers/brcm,brcmstb-memc-ddr.yaml
 create mode 100644 drivers/memory/brcmstb_memc.c

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2.25.1