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From: Michal Simek <michal.simek@amd.com>
To: <u-boot@lists.denx.de>, <git@amd.com>
Cc: Anshul Dalal <anshuld@ti.com>,
	Arturs Artamonovs <arturs.artamonovs@analog.com>,
	Eoin Dickson <eoin.dickson@microchip.com>,
	Fabio Estevam <festevam@gmail.com>,
	Greg Malysa <malysagreg@gmail.com>,
	"Ian Roberts" <ian.roberts@timesys.com>,
	Ilias Apalodimas <ilias.apalodimas@linaro.org>,
	Marek Vasut <marek.vasut+renesas@mailbox.org>,
	 Nathan Barrett-Morrison <nathan.morrison@timesys.com>,
	Neil Armstrong <neil.armstrong@linaro.org>,
	Nithish Kumar Naroju <nithishkumar.naroju@amd.com>,
	Oliver Gaskell <Oliver.Gaskell@analog.com>,
	Rasmus Villemoes <ravi@prevas.dk>,
	Rohit Visavalia <rohit.visavalia@amd.com>,
	 Simon Glass <sjg@chromium.org>,
	Tanmay Kathpalia <tanmay.kathpalia@altera.com>,
	Tom Rini <trini@konsulko.com>,
	Utsav Agarwal <utsav.agarwal@analog.com>,
	Vasileios Bimpikas <vasileios.bimpikas@analog.com>,
	Yegor Yefremov <yegorslists@googlemail.com>
Subject: [PATCH 0/3] gpio: Introduce gpio-delay driver and enable it on Kria
Date: Thu, 22 Jan 2026 13:50:32 +0100	[thread overview]
Message-ID: <cover.1769086229.git.michal.simek@amd.com> (raw)

Hi,

we need to wait more time for getting USB hub out of reset to be able to do
initialiation over i2c that's why use gpio-delay driver instead of changing
waiting time in usb hub driver. Waiting time depends on gpio wiring on the
board which is in some of our case going via SLG programmable device.

Thanks,
Michal


Michal Simek (3):
  gpio: Add GPIO delay driver
  xilinx: Enable GPIO delay driver on Kria platforms
  arm64: zynqmp: Wire gpio-delay driver for USB hub reset

 arch/arm/dts/zynqmp-sck-kd-g-revA.dtso |  13 ++-
 arch/arm/dts/zynqmp-sck-kr-g-revA.dtso |  16 ++-
 arch/arm/dts/zynqmp-sck-kr-g-revB.dtso |  16 ++-
 arch/arm/dts/zynqmp-sck-kv-g-revA.dtso |  13 ++-
 arch/arm/dts/zynqmp-sck-kv-g-revB.dtso |  11 +-
 configs/xilinx_zynqmp_kria_defconfig   |   1 +
 drivers/gpio/Kconfig                   |   8 ++
 drivers/gpio/Makefile                  |   1 +
 drivers/gpio/gpio-delay.c              | 133 +++++++++++++++++++++++++
 9 files changed, 196 insertions(+), 16 deletions(-)
 create mode 100644 drivers/gpio/gpio-delay.c

-- 
2.43.0

base-commit: 1b94b48043bd77fcb837704cba4385e14a4a694e
branch: debian-sent3

             reply	other threads:[~2026-01-22 12:50 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-22 12:50 Michal Simek [this message]
2026-01-22 12:50 ` [PATCH 1/3] gpio: Add GPIO delay driver Michal Simek
2026-01-30  7:21   ` Peng Fan
2026-01-30  8:29     ` Michal Simek
2026-02-03  1:36       ` Peng Fan
2026-02-03  1:06         ` Tom Rini
2026-02-03  7:02           ` Michal Simek
2026-01-22 12:50 ` [PATCH 2/3] xilinx: Enable GPIO delay driver on Kria platforms Michal Simek
2026-01-22 12:50 ` [PATCH 3/3] arm64: zynqmp: Wire gpio-delay driver for USB hub reset Michal Simek
2026-01-28  6:00   ` Pandey, Radhey Shyam

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