From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.69 #1 (Red Hat Linux)) id 1MQj3X-0002hn-NE for linux-mtd@lists.infradead.org; Tue, 14 Jul 2009 14:32:34 +0000 Date: Tue, 14 Jul 2009 16:32:29 +0200 From: Wolfram Sang To: Mike Frysinger Subject: Re: [PATCH] [MTD] [CHIPS] cfi_cmdset_0001.c: put chip into read-array mode after unlocking Message-ID: <20090714143229.GG7572@pengutronix.de> References: <1247578544-6950-1-git-send-email-vapier@gentoo.org> <20090714135621.GF7572@pengutronix.de> <8bd0f97a0907140714t3326e26am99c65ea5fcc62647@mail.gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="yQbNiKLmgenwUfTN" Content-Disposition: inline In-Reply-To: <8bd0f97a0907140714t3326e26am99c65ea5fcc62647@mail.gmail.com> Cc: Graf Yang , linux-mtd@lists.infradead.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --yQbNiKLmgenwUfTN Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable > the CFI layers already go through steps to keep the memory in read > mode by default. Ah, okay. With this assumption, the patch makes sense. Still, the patch description should refer more to the above statement and not to watchdogs I= MHO. > the only way the watchdog could reconfigure the > flash is if it were setup to execute software instead of kick the > hardware, and that makes the system significantly less reliable. I meant fixing the watchdog in hardware: If the watchdog pulls the right #RESET, the flash will be in read-mode by default. If not, this is an impor= tant hardware issue. Regards, Wolfram --=20 Pengutronix e.K. | Wolfram Sang | Industrial Linux Solutions | http://www.pengutronix.de/ | --yQbNiKLmgenwUfTN Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkpclv0ACgkQD27XaX1/VRvgUwCgobF43v/CKr+/cgvs0x/Ru4Ht yR8AoMUnxCPgfSHep7MpddUQ6haY8R/t =tOBp -----END PGP SIGNATURE----- --yQbNiKLmgenwUfTN--