From: Florian Fainelli <f.fainelli@gmail.com>
To: bcm-kernel-feedback-list@broadcom.com,
Markus Mayer <code@mmayer.net>,
Brian Norris <computersforpeace@gmail.com>,
Gregory Fong <gregory.0xf0@gmail.com>
Cc: Markus Mayer <mmayer@broadcom.com>,
ARM Kernel List <linux-arm-kernel@lists.infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 3/3] soc: brcmstb: dpfe: use byte 3 of registers MR4-MR8
Date: Sat, 9 Mar 2019 14:03:32 -0800 [thread overview]
Message-ID: <20190309220332.26100-1-f.fainelli@gmail.com> (raw)
In-Reply-To: <20190212012443.21819-4-code@mmayer.net>
On Mon, 11 Feb 2019 17:24:43 -0800, Markus Mayer <code@mmayer.net> wrote:
> From: Markus Mayer <mmayer@broadcom.com>
>
> For dual-rank LPDDR4, result data for any command is placed in byte 0
> and byte 3 of the corresponding MR register by the firmware.
> Single-rank RAM was supposed to work the same way. However, due to a
> firmware bug, result values are only placed in byte 3 of the
> corresponding MR register.
>
> Since byte 3 works for single-rank and dual-rank setups, we change the
> Linux driver to always use byte 3, thus returning the correct value in
> either case.
>
> Signed-off-by: Markus Mayer <mmayer@broadcom.com>
> ---
Applied to drivers/next, thanks!
--
Florian
prev parent reply other threads:[~2019-03-09 22:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-12 1:24 [PATCH 0/3] Some minor updates and fixes for the BRCMSTB DPFE driver Markus Mayer
2019-02-12 1:24 ` [PATCH 1/3] soc: brcmstb: dpfe: use msleep() over udelay() Markus Mayer
2019-03-09 22:03 ` Florian Fainelli
2019-02-12 1:24 ` [PATCH 2/3] soc: brcmstb: dpfe: optimize generic_show() Markus Mayer
2019-03-09 22:03 ` Florian Fainelli
2019-02-12 1:24 ` [PATCH 3/3] soc: brcmstb: dpfe: use byte 3 of registers MR4-MR8 Markus Mayer
2019-03-09 22:03 ` Florian Fainelli [this message]
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