linux-kernel - [PATCH 0/2] fix tegra-hda on tegra30 devices

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Date:   Fri, 25 Dec 2020 01:20:24 +0000
From:   Peter Geis <pgwipeout@...il.com>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        Prashant Gaikwad <pgaikwad@...dia.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Sameer Pujar <spujar@...dia.com>,
        Mohan Kumar <mkumard@...dia.com>
Cc:     linux-clk@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org, alsa-devel@...a-project.org,
        Peter Geis <pgwipeout@...il.com>
Subject: [PATCH 0/2] fix tegra-hda on tegra30 devices

The following patches fix tegra-hda on legacy tegra devices.
Two issues were discovered preventing tegra-hda from functioning:
The hda clocks on tegra30 were assigned to clk_m and running at too low of a rate to function.
The tegra-hda encounters an input/output error when opening a stream.

Since the only mainline device that used tegra-hda previously was the t124, it is unknown exactly when this was broken.
Fortunately a recent patch was submitted that fixed the issue only on t194 devices.
We can apply it universally to the tegra-hda device to resolve the issues across the board.
Note that downstream devices used the spdif device instead of hda for hdmi audio.
The spdif device lacks a driver on mainline.

Peter Geis (2):
  clk: tegra30: Add hda clock default rates to clock driver
  ALSA: hda/tegra: fix tegra-hda on tegra30 soc

 drivers/clk/tegra/clk-tegra30.c | 2 ++
 sound/pci/hda/hda_tegra.c       | 3 +--
 2 files changed, 3 insertions(+), 2 deletions(-)

-- 
2.25.1