Received-SPF: softfail (google.com: domain of transitioning linux-kernel-owner@vger.kernel.org does not designate 23.128.96.19 as permitted sender) client-ip=23.128.96.19;
Date:   Fri, 25 Feb 2022 08:54:46 -0800
From:   Colin Foster <colin.foster@in-advantage.com>
To:     Michael Walle <michael@walle.cc>
Cc:     Horatiu Vultur <horatiu.vultur@microchip.com>,
        Lars Povlsen <lars.povlsen@microchip.com>,
        Steen Hegelund <Steen.Hegelund@microchip.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        UNGLinuxDriver@microchip.com, linux-arm-kernel@lists.infradead.org,
        linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1 5/5] pinctrl: microchip-sgpio: wait until output is
 actually set
Message-ID: <20220225165446.GA4704@COLIN-DESKTOP1.localdomain>
References: <20220224161021.2197263-1-michael@walle.cc>
 <20220224161021.2197263-6-michael@walle.cc>
 <20220225092427.jjilv3qo52crsmuw@soft-dev3-1.localhost>
 <2f8a215c67269d639290515931d10b78@walle.cc>
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <2f8a215c67269d639290515931d10b78@walle.cc>
MIME-Version: 1.0
X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?jTcYbLfL1VbN46kSxnjbj3cpXZCgZBJsNOu8nmSvmretMw9nbQbPfN7HOFNu?=
 =?us-ascii?Q?67BKFOeH66t/nilZb12vWSTHjotHsjuEVGVjDuHjJc9TfoYFBNNFQjT467Q/?=
 =?us-ascii?Q?1K8x2vi9DiRvqHgsoCDV0+OL6AbfqT0KfMHdAyJGHBMsagW26mB1HbElzSne?=
 =?us-ascii?Q?I3vSFfDFdjPj9Igkx73wmqBkGd429/XHihRQ+f9GeLb25UkWECdcjBvhiS9r?=
 =?us-ascii?Q?9A0a3CdmjgloRA9zFl3O1pxB5dhMtkY/ooUROMi6JBSlIw1rNxVJHsoQTzfj?=
 =?us-ascii?Q?R0urRdVqNn3YYpGscvjx0dm0jwVHGlifZKs2Qm5DKJEmzwkMXlJMA2rJfYzU?=
 =?us-ascii?Q?tTHHTGvUrI4aaT1zKINIr6td4lmax985Yq4bzXyP4Yf2BGrnCV65XG/Cmgd8?=
 =?us-ascii?Q?0I2FjKa0GZUe1CkyIM+2Vek0k681mpAHsVd8lvxh5ryvdtNEjp1xySwOBdiC?=
 =?us-ascii?Q?6fvQBP8CDXlFPrZDq0nedgKocIh5ku3aYGYKKMdzCYjWPkj64fa9GN0+9UHl?=
 =?us-ascii?Q?udAG8epCevnr8uaVLr072AoKKGNPN45kHG/AOjwW5a5R2PcJcIYnJFc85Y06?=
 =?us-ascii?Q?aplXo5Z5jE5X9cO9Us1CxvSanRFEH/SmZ2I23U5r+eeg5MNRd7QKUg1S1JpP?=
 =?us-ascii?Q?ae78rd2Gh0HqLyxRcBrqql1A1aMInnSkCb9mYQSuoQ7iqv1bjQ9NBtPid5+p?=
 =?us-ascii?Q?tOBQdn8nwA8wzCsRC62nOmtRlo9V+NhCnhJoD3FEE4aQyhZCPJv+v7LoaoUl?=
 =?us-ascii?Q?4iiUyCjvBfFhkg6ddFzRHI74OYfkH3v/WuIN/M5JArAf6VZ6jfTTWiDoJXBb?=
 =?us-ascii?Q?o7QPT+hA4qtyUhqeH9TiKETFN7wIw3Ncrw5177cdRn2AyDG3538r6euhA6q8?=
 =?us-ascii?Q?6Y2z6ZY7pohBUYvY0sHsqiwsKioiwfDAyzBkFFhHAwzg/CxFh5Jdm2qEbs3F?=
 =?us-ascii?Q?iFPV3WaDC7+PxAPWoZZWd9yAO6Rh9T21vCHmMU9wWMPM2De7VVWOHHgj77n+?=
 =?us-ascii?Q?K32I0zxmYV1Yd0uUydtyMkwmfcB32DvXn3B1VVPYsPInlUmtflQi4jj1EQsI?=
 =?us-ascii?Q?gqJ2bZy8aEPgCwYtWqTbiUsYCO3CvdTdsATtfhm4BljKhHq7mR+j4nx4KEbr?=
 =?us-ascii?Q?Uqej3BcGwa52SoDnSAhg7YEbi2K5IJ2FKCcSDlPlrZBu5KRo17lJTM8TbD1E?=
 =?us-ascii?Q?An8hmCuwoyYW5MxcNm1eqoOJc49z1wzKeS7+79B6Z7DWEVX0gNr+1FGyIGes?=
 =?us-ascii?Q?zXcU1V4MKm5/68FtQR4FMCf28lMcpI8TCMfS1/IlkNV5nLZe/6TBAn8Oyc+M?=
 =?us-ascii?Q?VEWlGA06Ac9/Zb/BS0qZnRGZrr6OobfwOGm4X8UkoEkUU1p6+aHV1YCCof+4?=
 =?us-ascii?Q?68X/8gv8ZjRvLJujFn4ruPMDSuRXi4N2ZDGyN0JzgMEJR4Po1TWGDaoWiZfx?=
 =?us-ascii?Q?PdYMH+7233pwczCRD708xkMuzykoCak09KDj5YFrI6ayMp9G9IpJRzdt3nUg?=
 =?us-ascii?Q?Gfb7PJdsLsB9VPUq7LeAiXZ9+EM4UwUzRckIVm5FLrWFoNjsXprZzDVn1tDd?=
 =?us-ascii?Q?h3ERVCxI1M3WKwwzdb13+bsXshit9OPmWJ6If7eUCBSIkcAQ7U8eQeVWUKN3?=
 =?us-ascii?Q?Aq7RL9IVRjval1Ug3Y/6kuIjykBjlKaQc1CkPfPkouxYNv7tO26xVFJcwVkq?=
 =?us-ascii?Q?vsq7Rw=3D=3D?=
X-OriginatorOrg: in-advantage.com
X-MS-Exchange-CrossTenant-Network-Message-Id: ba4054b1-c097-4d23-0f06-08d9f87f8561
X-MS-Exchange-CrossTenant-AuthSource: MWHPR1001MB2351.namprd10.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Feb 2022 16:54:43.5026
 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: 48e842ca-fbd8-4633-a79d-0c955a7d3aae
X-MS-Exchange-CrossTenant-MailboxType: HOSTED
X-MS-Exchange-CrossTenant-UserPrincipalName: 7J3AMxOdbVwTXF/5r2iy32ms7ROMFTnE4GXSDeXOwGtfcmMuMBvLyxugwgrS/w27CwVTzACgU+zj/d1tO8fqQIKHNR7rlwWAGlMMeoN4O54=
X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR1001MB2182
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED,
	DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RDNS_NONE,
	SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no
	version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
	lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Hi Michael,

On Fri, Feb 25, 2022 at 12:29:50PM +0100, Michael Walle wrote:
> 
> Could you also have a look at the other supported sgpio block,
> the ocelot and the luton? I don't have any register description
> of these.

The current supported Ocelot chips are the VSC7514 (link below) and the
VSC7513. Chapter 6 of this PDF links a second PDF, and you should be
able to find the Serial GPIO definitions in DEVCPU_GCB:SIO_CTRL on page
79 of that PDF.
https://ww1.microchip.com/downloads/en/DeviceDoc/VMDS-10491.pdf

I'm working on support for the VSC7511/7512, so I can run a "does it
work" test, but I likely won't have a setup to test the corner
conditions this patch set is addressing with any confidence.


Colin Foster