linux-kernel - [PATCH v3 0/1] ARM: Add Rockchip rk3288w support

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Message-Id: <20200601151442.156184-1-mylene.josserand@collabora.com>
Date:   Mon,  1 Jun 2020 17:14:41 +0200
From:   Mylène Josserand 
        <mylene.josserand@...labora.com>
To:     mturquette@...libre.com, sboyd@...nel.org, heiko@...ech.de
Cc:     linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        mylene.josserand@...labora.com, kever.yang@...k-chips.com,
        geert@...ux-m68k.org, kernel@...labora.com
Subject: [PATCH v3 0/1] ARM: Add Rockchip rk3288w support

Hello everyone,

Context
-------

Here is my V3 of my patches that add the support for the Rockchip
RK3288w which is a revision of the RK3288. It is mostly the same SOC
except for, at least, one clock tree which is different.
This difference is only known by looking at the BSP kernel [1].

Currently, the mainline kernel will not hang on rk3288w but it is
probably by "chance" because we got an issue on a lower kernel version.

According to Rockchip's U-Boot [2], the rk3288w can be detected using
the HDMI revision number (= 0x1A) in this version of the SOC.

Changelog
---------

In this V3, the revision's detection is not done in the kernel anymore.
This patch will handle the rk3288w clock tree according to a new
compatible "rockchip,rk3288w-cru" that must be provided by bootloaders.

Changes since v2:
   - Remove all codes about revision detection, let's handle that by
   Bootloaders

Best regards,
Mylène Josserand

[1] https://github.com/rockchip-linux/kernel/blob/develop-4.4/drivers/clk/rockchip/clk-rk3288.c#L960..L964
[2] https://github.com/rockchip-linux/u-boot/blob/next-dev/arch/arm/mach-rockchip/rk3288/rk3288.c#L378..L388

Mylène Josserand (1):
  clk: rockchip: rk3288: Handle clock tree for rk3288w

 drivers/clk/rockchip/clk-rk3288.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

-- 
2.26.2