linux-kernel - Re: [PATCH v5 0/8] Tegra20 External Memory Controller driver

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Date:   Mon, 15 Oct 2018 15:40:25 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        Jonathan Hunter <jonathanh@...dia.com>
Cc:     Prashant Gaikwad <pgaikwad@...dia.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, linux-tegra@...r.kernel.org,
        linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 0/8] Tegra20 External Memory Controller driver

On 7/24/18 7:42 PM, Dmitry Osipenko wrote:
> Changelog:
> 
> v5:
>         - Fixed wrong EMC clock divider type in the "Turn EMC clock gate into
>           divider" patch. It is a Tegra's fractional 7.1 divider and not a
>           simple integer divider. Peter, please take a look at the change.
> 
> v4:
>         - Fixed "bad of_node_put()" error which was revealed by enabling
>           some extra kernel debug config options.
> 
>         - The "emc-table" DT nodes are now parsed starting from the "emc"
>           node instead of the DT root.
> 
>         - Adjusted code comment in the "Turn EMC clock gate into divider"
>           patch as was suggested by Stephen Boyd to the v3.
> 
> v3:
>         - Handle "nvidia,use-ram-code" DT property, its handling was missed
>           in the previous versions.
> 
>         - Honor "emc-tables" DT node naming which is explicitly specified
>           in the DT binding, also was missed in the previous versions.
> 
>         - Two new DT binding patches: one adds the EMC clock property,
>           other relocates the binding doc file to the appropriate directory.
>           One new patch that adds EMC clock property to the DTS file.
> 
>         - Addressed v2 review comments from Thierry Reding. Driver does not
>           preserve backwards compatibility with older device tree binding.
> 
>         - The PLL_M and PLL_P clocks are kept internal to the driver because
>           after some more considering I couldn't find a really good reason why
>           these clocks should be in the device tree.
> 
>         - Some minor cleanups and fixes in the drivers code.
> 
> v2:
>         - Minor code cleanups like consistent use of writel_relaxed instead
>           of non-relaxed version, reworded error messages, etc.
> 
>         - Factored out use_pllm_ud bit checking into a standalone patch for
>           consistency.
> 
> Dmitry Osipenko (8):
>   dt: bindings: tegra20-emc: Document interrupt property
>   dt: bindings: tegra20-emc: Document clock property
>   dt: bindings: Move tegra20-emc binding to memory-controllers directory
>   ARM: dts: tegra20: Add interrupt entry to External Memory Controller
>   ARM: dts: tegra20: Add clock entry to External Memory Controller
>   clk: tegra20: Turn EMC clock gate into divider
>   clk: tegra20: Check whether direct PLLM sourcing is turned off for EMC
>   memory: tegra: Introduce Tegra20 EMC driver
> 
>  .../nvidia,tegra20-emc.txt                    |   4 +
>  arch/arm/boot/dts/tegra20.dtsi                |   2 +
>  drivers/clk/tegra/clk-tegra20.c               |  46 +-
>  drivers/memory/tegra/Kconfig                  |  10 +
>  drivers/memory/tegra/Makefile                 |   1 +
>  drivers/memory/tegra/tegra20-emc.c            | 575 ++++++++++++++++++
>  6 files changed, 628 insertions(+), 10 deletions(-)
>  rename Documentation/devicetree/bindings/{arm/tegra => memory-controllers}/nvidia,tegra20-emc.txt (95%)
>  create mode 100644 drivers/memory/tegra/tegra20-emc.c
> 

Thierry, I now have v6 with some extra minor changes. Do you see any problems that need to be addressed in v5?