From: Stephen Boyd <sboyd@kernel.org>
To: Marek Vasut <marex@denx.de>, linux-clk@vger.kernel.org
Cc: Marek Vasut <marex@denx.de>,
Alexander Stein <alexander.stein@ew.tq-group.com>,
Michael Turquette <mturquette@baylibre.com>
Subject: Re: [PATCH v4] clk: rs9: Fix I2C accessors
Date: Mon, 17 Oct 2022 14:06:22 -0700 [thread overview]
Message-ID: <20221017210624.18589C433D7@smtp.kernel.org> (raw)
In-Reply-To: <20220929195521.284497-1-marex@denx.de>
Quoting Marek Vasut (2022-09-29 12:55:21)
> Add custom I2C accessors to this driver, since the regular I2C regmap ones
> do not generate the exact I2C transfers required by the chip. On I2C write,
> it is mandatory to send transfer length first, on read the chip returns the
> transfer length in first byte. Instead of always reading back 8 bytes, which
> is the default and also the size of the entire register file, set BCP register
> to 1 to read out 1 byte which is less wasteful.
>
> Fixes: 892e0ddea1aa ("clk: rs9: Add Renesas 9-series PCIe clock generator driver")
> Reported-by: Alexander Stein <alexander.stein@ew.tq-group.com>
> Signed-off-by: Marek Vasut <marex@denx.de>
> ---
Applied to clk-fixes
prev parent reply other threads:[~2022-10-17 21:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-29 19:55 [PATCH v4] clk: rs9: Fix I2C accessors Marek Vasut
2022-09-30 6:25 ` Alexander Stein
2022-10-17 21:06 ` Stephen Boyd [this message]
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