Date: Sat, 3 Nov 2018 21:54:55 +0100 From: Bernd Walter <ticso@cicely7.cicely.de> To: Ian Lepore <ian@freebsd.org> Cc: ticso@cicely.de, freebsd-arm@freebsd.org, Bernd Walter <ticso@cicely7.cicely.de> Subject: Re: How to add custom dts entries Message-ID: <20181103205455.GD79858@cicely7.cicely.de> In-Reply-To: <1541277990.52306.4.camel@freebsd.org> References: <20181103200709.GB79858@cicely7.cicely.de> <1541277990.52306.4.camel@freebsd.org>
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On Sat, Nov 03, 2018 at 02:46:30PM -0600, Ian Lepore wrote: > We do have overlay support now. I don't know much about using it, > hopefully those who do will reply with details. That's good to know. Hope for an answer too ;-) > There have also been updates to the SPI world. Your apa102led0 fdt node > now requires a "spi-max-frequency" property, the value is the bus speed > to use when communicating with that device, in Hz (different devices on > the same bus can now have different speeds, and there is no concept of > a default speed). Also, the chipsel number should be in a reg= > property, but we still support spi-chipselect= too for backwards > compatibility. Ah, important information. I had been using dev.spi.0.clock to increase speed. Obviously dev.spi doesn't even exists anymore. Have to check about the CS, technically it is a dummy value anyway, since the APA102 LEDs don't have a chip select and are the only device connected to the SPI. -- B.Walter <bernd@bwct.de> http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
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