From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Linhua Xu <Linhua.xu@unisoc.com>
Cc: Linus Walleij <linus.walleij@linaro.org>,
Orson Zhai <orsonzhai@gmail.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Chunyan Zhang <zhang.lyra@gmail.com>,
linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
lh xu <xulh0829@gmail.com>,
Xiongpeng Wu <xiongpeng.wu@unisoc.com>
Subject: Re: [PATCH 3/6] pinctrl: sprd: Modify pull-up parameters
Date: Fri, 25 Aug 2023 13:13:25 +0300 [thread overview]
Message-ID: <ZOh+xZqr0RiCLPC3@smile.fi.intel.com> (raw)
In-Reply-To: <20230825031826.31599-4-Linhua.xu@unisoc.com>
On Fri, Aug 25, 2023 at 11:18:23AM +0800, Linhua Xu wrote:
> From: Linhua Xu <Linhua.Xu@unisoc.com>
>
> For UNISOC pin controller, there are three different configurations of
> pull-up drive current: 1 for pull-up resistor is 20K, 2 for pull-up
> resistor is 4.7K and 3 for pull-up resistor is 1.8K. Thus modify them.
...
> - if (arg == 20000)
> - else if (arg == 4700)
> + if (arg == 3)
> + else if (arg == 2)
> + else if (arg == 1)
This will break existing users. What's wrong with leaving this as is
and adding 1.8kOhm?
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2023-08-25 10:14 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-25 3:18 [PATCH 0/6] pinctrl: sprd: Modification of UNIOC Platform pinctrl Driver Linhua Xu
2023-08-25 3:18 ` [PATCH 1/6] pinctrl: sprd: Modify the probe function parameters Linhua Xu
2023-08-25 5:25 ` kernel test robot
2023-08-25 10:08 ` Andy Shevchenko
2023-08-25 3:18 ` [PATCH 2/6] pinctrl: sprd: Fix the incorrect mask and shift definition Linhua Xu
2023-08-25 10:10 ` Andy Shevchenko
2023-08-25 3:18 ` [PATCH 3/6] pinctrl: sprd: Modify pull-up parameters Linhua Xu
2023-08-25 10:13 ` Andy Shevchenko [this message]
2023-08-25 3:18 ` [PATCH 4/6] pinctrl: sprd: Add pinctrl support for UMS512 Linhua Xu
2023-08-25 10:17 ` Andy Shevchenko
2023-08-25 3:18 ` [PATCH 5/6] pinctrl: sprd: Increase the range of register values Linhua Xu
2023-08-25 10:19 ` Andy Shevchenko
2023-08-25 3:18 ` [PATCH 6/6] pinctrl: sprd: Add pinctrl support for UMS9621 Linhua Xu
2023-08-25 10:20 ` Andy Shevchenko
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