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Message-Id: <20220610054722.32229-1-potin.lai.pt@gmail.com>
Date: Fri, 10 Jun 2022 13:47:20 +0800
From: Potin Lai <potin.lai.pt@...il.com>
To: Brendan Higgins <brendanhiggins@...gle.com>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Joel Stanley <joel@....id.au>,
Andrew Jeffery <andrew@...id.au>,
Rob Herring <robh+dt@...nel.org>,
Rayn Chen <rayn_chen@...eedtech.com>
Cc: Patrick Williams <patrick@...cx.xyz>,
Potin Lai <potin.lai@...ntatw.com>, linux-i2c@...r.kernel.org,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
Potin Lai <potin.lai.pt@...il.com>
Subject: [PATCH v4 0/2] Add a property for setting minimum persentage of i2c clock high
Introducing i2c-clk-high-min-percent property for setting minimum
persentage of clock high.
This driver will go through base clock divisor and calculate a set of
high/low clock with duty cycle applied. if driver could not find a suit
high/low clock set, then it will use default duty cycle (50%) recalculate.
LINK: [v1] https://lore.kernel.org/all/20220530114056.8722-1-potin.lai.pt@gmail.com/
LINK: [v2] https://lore.kernel.org/all/20220601041512.21484-1-potin.lai.pt@gmail.com/
LINK: [v3] https://lore.kernel.org/all/20220607163703.26355-1-potin.lai.pt@gmail.com/
changes v3 --> v4:
* rename property to i2c-clk-high-min-percent
changes v2 --> v3:
* discard the properties for manual setting, use duty cycle to calculate
high/low clock.
changes v1 --> v2:
* update bt-bindings documentation
* use meaningful values for properties instead of acture value in register
Potin Lai (2):
aspeed: i2c: add clock duty cycle property
dt-bindings: aspeed-i2c: add properties for setting i2c clock duty
cycle
.../devicetree/bindings/i2c/aspeed,i2c.yaml | 7 +++
drivers/i2c/busses/i2c-aspeed.c | 56 +++++++++++++++----
2 files changed, 52 insertions(+), 11 deletions(-)
--
2.17.1
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