Date: Sat, 1 May 2021 20:30:10 -0700 From: Mark Millard <marklmi@yahoo.com> To: Emmanuel Vadot <manu@bidouilliste.com> Cc: freebsd-arm <freebsd-arm@freebsd.org> Subject: Re: I2C/IIC working on RPI4 8GB? Message-ID: <7C158AF4-5E45-4582-A7E7-AB9ABED01691@yahoo.com> In-Reply-To: <20210426160610.5b91dc44e86ddea169ca8e27@bidouilliste.com> References: <1C2DD11C-B1F6-4C2A-9AB0-5F1553520FF5@FreeBSD.org> <C0038E5F-F218-425B-AFE6-84537CE10155@cs.huji.ac.il> <20210426160610.5b91dc44e86ddea169ca8e27@bidouilliste.com>
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On 2021-Apr-26, at 07:06, Emmanuel Vadot <manu at bidouilliste.com> wrote: > On Sun, 25 Apr 2021 18:41:31 +0300 > Daniel Braniss <danny@cs.huji.ac.il> wrote: > >> >> >>> . . . > > RPI doesn't uses twsi so that will not change a thing. The RPI4B 8GiByte context I have mentions twsi in the sysctl output: # sysctl dev.iichb dev.iichb.0.debug: 0 dev.iichb.0.rise_edge_delay: 48 dev.iichb.0.fall_edge_delay: 48 dev.iichb.0.clock_stretch: 64 dev.iichb.0.frequency: 100000 dev.iichb.0.%parent: simplebus0 dev.iichb.0.%pnpinfo: name=i2c@7e804000 compat=brcm,bcm2711-i2c dev.iichb.0.%location: dev.iichb.0.%driver: iichb dev.iichb.0.%desc: BCM2708/2835 BSC controller dev.iichb.%parent: twsi (Not that I know the implications, if any.) >> . . . > > === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)
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