On Thu, 29 Mar 2012 02:26:34 +0800, Daniel Kurtz <djkurtz at chromium.org> wrote: > The GMBUS controller GMBUS3 register is double-buffered. Take advantage > of this by writing two 4-byte words before the first wait for HW_RDY. > This helps keep the GMBUS controller from becoming idle during long writes. > > Signed-off-by: Daniel Kurtz <djkurtz at chromium.org>
"For byte counts that are greater than four bytes, this register will be written with subsequent data only after the HW_RDY status bit is set" Hmm, I had interpretted that as should only be. But if you take into account that the register is indeed double-buffered, it does make sense that the hardware itself is only updated after the HW_RDY signal. Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk> -Chris -- Chris Wilson, Intel Open Source Technology Centre
