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Date: Mon, 15 Sep 2014 12:59:54 +0200 From: Anders Berg <anders.berg@...gotech.com> To: Linus Walleij <linus.walleij@...aro.org> Cc: Mark Brown <broonie@...nel.org>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, "linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] spi: pl022: Add support for chip select extension On Fri, Sep 12, 2014 at 7:00 PM, Linus Walleij <linus.walleij@...aro.org> wrote: > On Thu, Sep 11, 2014 at 10:10 PM, Anders Berg <anders.berg@...gotech.com> wrote: (...) >> I picked 0xb6 since I've seen some reference manuals for other AMBA >> peripherals the use of JEDEC assigned vendor IDs in this register field (see >> the PL390 TRM for example). So I put the LSI Logic 7-bit JEDEC ID (0x36) >> there: [0:6] = 0x36, [7] = 1 (the MSB set to '1' to signify the use of JEDEC >> ID instead of a "classic" AMBA vendor). > > Hey that's very observant, I had no clue about that scheme! > > Can you write a comment about this in <linux/amba/bus.h> when > you patch it (like above the enum) so we know that in the future > when people need to pick new IDs? Sure, will do. /Anders -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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