From: adlavinitha reddy <adlavinitha.reddy@mediatek.com>
To: Qii Wang <qii.wang@mediatek.com>,
Andi Shyti <andi.shyti@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>
Cc: <linux-i2c@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<Project_Global_Chrome_Upstream_Group@mediatek.com>,
adlavinitha reddy <adlavinitha.reddy@mediatek.com>
Subject: [v1,PATCH 0/1] i2c: mediatek: add bus regulator control for power saving
Date: Wed, 18 Mar 2026 16:46:15 +0800 [thread overview]
Message-ID: <20260318084621.4127757-1-adlavinitha.reddy@mediatek.com> (raw)
This patch adds conditional bus regulator enable/disable support in
mtk_i2c_transfer() to allow I2C bus power gating on platforms that
provide a vbus-supply in the device tree.
The implementation:
- Enables bus_regulator before clk_bulk_enable() if vbus-supply is defined
- Disables bus_regulator after clk_bulk_disable()
- Only activates when vbus-supply is provided in device tree
- Has no impact on platforms without vbus-supply defined
This approach provides power savings for platforms with an extra I2C bus
regulator, while avoiding runtime PM complexity.
Based on linux-next, tag: next-20260305
adlavinitha reddy (1):
i2c: mediatek: add bus regulator control for power saving
drivers/i2c/busses/i2c-mt65xx.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
--
2.45.2
next reply other threads:[~2026-03-18 8:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-18 8:46 adlavinitha reddy [this message]
2026-03-18 8:46 ` [v1,PATCH 1/1] i2c: mediatek: add bus regulator control for power saving adlavinitha reddy
2026-03-26 9:49 ` Chen-Yu Tsai
2026-04-14 23:03 ` Andi Shyti
-- strict thread matches above, loose matches on Subject: below --
2026-03-18 8:42 [v1,PATCH 0/1] " adlavinitha reddy
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