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Date:      Tue, 27 Jun 2023 12:08:56 +0300
From:      titus <titus@edc.ro>
To:        Marcin Cieslak <saper@saper.info>
Cc:        freebsd-arm@freebsd.org
Subject:   Re: allwinner h616 + serial console glitch
Message-ID:  <1261C333-8E21-4C8B-A002-205043B66506@edc.ro>
In-Reply-To: <p929pp25-9s60-s54o-2714-971101r12po4@fncre.vasb>
References:  <FCC43C68-9B0E-43DE-A47A-93D0C5BE9073@edc.ro> <sr31p5os-q763-p32r-9433-poq9pprr604q@fncre.vasb> <E10E7DF9-C188-4674-AF9C-5DC7E45839D7@edc.ro> <p929pp25-9s60-s54o-2714-971101r12po4@fncre.vasb>

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it may have to with this
>=20
>         /* UART_BGR_REG Enabling the gate enable weir behavior ... */
>         /* CCU_GATE(CLK_BUS_UART0, "bus-uart0", "apb2", 0x90c, 0) */
>         /* CCU_GATE(CLK_BUS_UART1, "bus-uart1", "apb2", 0x90c, 1) */
>         /* CCU_GATE(CLK_BUS_UART2, "bus-uart2", "apb2", 0x90c, 2) */
>         /* CCU_GATE(CLK_BUS_UART3, "bus-uart3", "apb2", 0x90c, 3) */
this is from the ccu_h6.c clock driver
i had them enabled for the h616 code (now i commented it out and it =
works)
thanks for the clock idea

> On Jun 27, 2023, at 10:53 AM, Marcin Cieslak <saper@saper.info> wrote:
>=20
> On Tue, 27 Jun 2023, titus wrote:
>=20
>>> #  stty -a
>>> speed 115384 baud; 0 rows; 0 columns;
>=20
>   ^^^^^^^^^^^^
>=20
> looks like you have a clock problem, either the base UART clock or the =
divisor
> are not quite right. Probably you want to have 115200 here, so it is =
slightly off.
>=20
> (Just guessing, never had such an issue before)
>=20
> Marcin




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