From: Leif Lindholm <leif.lindholm@linaro.org>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: "edk2-devel@lists.01.org" <edk2-devel@lists.01.org>
Subject: Re: [PATCH] Silicon/SynQuacer/PlatformDxe: enable spread spectrum mode for ASM1061 SATA
Date: Wed, 24 Jan 2018 11:47:17 +0000 [thread overview]
Message-ID: <20180124114717.6svda6qhg2eydtst@bivouac.eciton.net> (raw)
In-Reply-To: <CAKv+Gu-PoYm+9mBXyME1WCOA0EmA5AyM3dPcKSB=6B=smM2ZUg@mail.gmail.com>
On Wed, Jan 24, 2018 at 11:13:17AM +0000, Ard Biesheuvel wrote:
> >> + if (PciVidPid[1] == ASM1061_PID) {
> >> + //
> >> + // The ASM1061 SATA controller as integrated into the DeveloperBox design
> >> + // emits too much electromagnetic radiation. So enable spread spectrum
> >> + // mode.
> >> + //
> >> + EnableAsm1061SpreadSpectrum (PciIo);
> >> + } else if (PciVidPid[1] == ASM1182E_PID || PciVidPid[1] == ASM1184E_PID) {
> >
> > Does this "else if" prevent the SATA controller from training GEN2?
> > Could it be just another if?
> >
>
> Only if PciVidPid[1] equals ASM1061_PID and ASM1182E_PID/ASM1184E_PID
> at the same time.
Ah, gotcha.
The flattened topology threw me off :)
/
Leif
prev parent reply other threads:[~2018-01-24 11:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-24 10:40 [PATCH] Silicon/SynQuacer/PlatformDxe: enable spread spectrum mode for ASM1061 SATA Ard Biesheuvel
2018-01-24 11:10 ` Leif Lindholm
2018-01-24 11:13 ` Ard Biesheuvel
2018-01-24 11:47 ` Leif Lindholm [this message]
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