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bh=2lOcs+UTw4dmBloNALI7qAVSlEXtyPQR37rH78D+i/o=; b=bVqCxwN9tmkJZHooqpLflcnipllDTeApHDS43Wkq+JUrUrmHB/HNCQCE2xxH5DADd3i8HM hZVA1yRYWaOXJbHVEJ2IR1rBBt6AiQLhy5UsKbEXE8Z/46D6VvGrxDMPpN6PVOCbGE2+U5 yux3fRBm5zIpf3jFTjbqZ2Je9KPoLe/f5XNg5G4luFUTfyV7398WnCLA19Fr1ahpEWnXL2 0LwRYpirYPLTESRKVq4AL882zx+tX5KfDsqGme9qulBjS0PAOc/h0ODF62KhUoRIIPWpxj ubP6nKLSiWgYhw2v0wMjW5DACMWWLTaMqyvWUe8OytndfIaA2wpxQrqBkeXWlw== From: Miquel Raynal To: han.xu@oss.nxp.com Cc: Richard Weinberger , Vignesh Raghavendra , imx@lists.linux.dev, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, Han Xu Subject: Re: [PATCH] mtd: rawnand: gpmi: add debugfs entry for BCH geometry In-Reply-To: <20260727-nand_debugfs-v1-1-7cba1ceab5ee@nxp.com> (han xu's message of "Mon, 27 Jul 2026 16:09:08 -0500") References: <20260727-nand_debugfs-v1-1-7cba1ceab5ee@nxp.com> User-Agent: mu4e 1.12.12; emacs 30.2 Date: Wed, 29 Jul 2026 10:05:36 +0200 Message-ID: <87jyqenru7.fsf@bootlin.com> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260729_010548_369886_955AB6DA X-CRM114-Status: GOOD ( 19.82 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org SGkgSGFuLAoKT24gMjcvMDcvMjAyNiBhdCAxNjowOTowOCAtMDUsIGhhbi54dUBvc3MubnhwLmNv bSB3cm90ZToKCj4gRnJvbTogSGFuIFh1IDxoYW4ueHVAbnhwLmNvbT4KPgo+IEV4cG9ydCB0aGUg QkNIIGdlb21ldHJ5IHBhcmFtZXRlcnMgdmlhIGRlYnVnZnMgdG8gYWlkIGRlYnVnZ2luZyBhbmQK PiBwcm92aWRlIHRoZSBuZWNlc3NhcnkgaW5mb3JtYXRpb24gZm9yIGxlZ2FjeSBrb2JzLW5nIHRv b2wuIFRoZSBkZWJ1Z2ZzCj4gZGlyZWN0b3J5ICJncG1pLW5hbmQiIGlzIGNyZWF0ZWQgdW5kZXIg dGhlIHJvb3QgZGVidWdmcyB0cmVlLCBleHBvc2luZzoKPgo+IGJjaF9nZW9tZXRyeSAgLSBibG9i IGNvbnRhaW5pbmcgdGhlIHN0cnVjdCBiY2hfZ2VvbWV0cnkgZmllbGRzCj4gcmF3X21vZGUgICAg ICAtIGZsYWcgaW5kaWNhdGluZyByYXcgbW9kZSBzdGF0dXMKPgo+IFRoZSBpbXBsZW1lbnRhdGlv biBpcyBndWFyZGVkIHdpdGggI2lmZGVmIENPTkZJR19ERUJVR19GUyB0byBhdm9pZAo+IGJ1aWxk IGZhaWx1cmVzIHdoZW4gZGVidWdmcyBpcyBkaXNhYmxlZC4KPgo+IFNpZ25lZC1vZmYtYnk6IEhh biBYdSA8aGFuLnh1QG54cC5jb20+Cj4gLS0tCj4gIGRyaXZlcnMvbXRkL25hbmQvcmF3L2dwbWkt bmFuZC9ncG1pLW5hbmQuYyB8IDI0ICsrKysrKysrKysrKysrKysrKysrKysrKwo+ICAxIGZpbGUg Y2hhbmdlZCwgMjQgaW5zZXJ0aW9ucygrKQo+Cj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvbXRkL25h bmQvcmF3L2dwbWktbmFuZC9ncG1pLW5hbmQuYyBiL2RyaXZlcnMvbXRkL25hbmQvcmF3L2dwbWkt bmFuZC9ncG1pLW5hbmQuYwo+IGluZGV4IGMxZjc2NmNiMjI1YWEuLjNjZWI4ZGY3ZjhmOTMgMTAw NjQ0Cj4gLS0tIGEvZHJpdmVycy9tdGQvbmFuZC9yYXcvZ3BtaS1uYW5kL2dwbWktbmFuZC5jCj4g KysrIGIvZHJpdmVycy9tdGQvbmFuZC9yYXcvZ3BtaS1uYW5kL2dwbWktbmFuZC5jCj4gQEAgLTcs NiArNyw3IEBACj4gICAqLwo+ICAjaW5jbHVkZSA8bGludXgvY2xlYW51cC5oPgo+ICAjaW5jbHVk ZSA8bGludXgvY2xrLmg+Cj4gKyNpbmNsdWRlIDxsaW51eC9kZWJ1Z2ZzLmg+Cj4gICNpbmNsdWRl IDxsaW51eC9kZWxheS5oPgo+ICAjaW5jbHVkZSA8bGludXgvc2xhYi5oPgo+ICAjaW5jbHVkZSA8 bGludXgvc2NoZWQvdGFza19zdGFjay5oPgo+IEBAIC03MzIsNiArNzMzLDI2IEBAIHN0YXRpYyBp bnQgY29tbW9uX25mY19zZXRfZ2VvbWV0cnkoc3RydWN0IGdwbWlfbmFuZF9kYXRhICp0aGlzKQo+ ICAJcmV0dXJuIGVycjsKPiAgfQo+ICAKPiArI2lmZGVmIENPTkZJR19ERUJVR19GUwo+ICtzdGF0 aWMgc3RydWN0IGRlYnVnZnNfYmxvYl93cmFwcGVyIGRiZ19iY2hfZ2VvOwoKV2h5IGRvIHlvdSB1 c2UgYSBzdGF0aWMgdmFyaWFibGUgZm9yIHRoYXQ/IFRoaXMgc2hvdWxkIGJlIGR5bmFtaWNhbGx5 CmFsbG9jYXRlZCBvdGhlcndpc2UgaWYgeW91IGV2ZXIgaGF2ZSBtb3JlIHRoYW4gb25lIGRldmlj ZSB5b3UnbGwgaGF2ZQpzdHJhbmdlIHJlc3VsdHMuCgo+ICtzdGF0aWMgdm9pZCBiY2hfY3JlYXRl X2RlYnVnZnMoc3RydWN0IGdwbWlfbmFuZF9kYXRhICp0aGlzKQo+ICt7Cj4gKwlzdHJ1Y3QgYmNo X2dlb21ldHJ5ICpiY2hfZ2VvID0gJnRoaXMtPmJjaF9nZW9tZXRyeTsKPiArCXN0cnVjdCBkZW50 cnkgKmRiZ19yb290Owo+ICsKPiArCWRiZ19yb290ID0gZGVidWdmc19jcmVhdGVfZGlyKCJncG1p LW5hbmQiLCBOVUxMKTsKPiArCWRiZ19iY2hfZ2VvLmRhdGEgPSAodm9pZCAqKWJjaF9nZW87Cj4g KwlkYmdfYmNoX2dlby5zaXplID0gc2l6ZW9mKHN0cnVjdCBiY2hfZ2VvbWV0cnkpOwo+ICsJZGVi dWdmc19jcmVhdGVfYmxvYigiYmNoX2dlb21ldHJ5IiwgMDQ0NCwgZGJnX3Jvb3QsICZkYmdfYmNo X2dlbyk7Cj4gKwkvKiBjcmVhdGUgcmF3IG1vZGUgZmxhZyAqLwo+ICsJZGVidWdmc19jcmVhdGVf ZmlsZV9mdWxsKCJyYXdfbW9kZSIsIDA0NDQsIGRiZ19yb290LCBOVUxMLCBOVUxMLAo+IE5VTEwp OwoKSSBhbSBub3Qgc3VyZSBhYm91dCB0aGUgX2Z1bGwgc3VmZml4LCBidWcgZGVidWZzX2NyZWF0 ZV9maWxlKCkgaXMgZW5vdWdoCmhlcmUsIHByb3ZpZGVkIHRoYXQgeW91IGdpdmUgYSB0YW5naWJs ZSB2YXJpYWJsZSB0byBleHBvc2UuCgo+ICt9Cj4gKyNlbHNlCj4gK3N0YXRpYyB2b2lkIGJjaF9j cmVhdGVfZGVidWdmcyhzdHJ1Y3QgZ3BtaV9uYW5kX2RhdGEgKnRoaXMpCj4gK3sKPiArfQo+ICsj ZW5kaWYgLyogQ09ORklHX0RFQlVHX0ZTICovCj4gKwo+ICAvKiBDb25maWd1cmVzIHRoZSBnZW9t ZXRyeSBmb3IgQkNILiAgKi8KPiAgc3RhdGljIGludCBiY2hfc2V0X2dlb21ldHJ5KHN0cnVjdCBn cG1pX25hbmRfZGF0YSAqdGhpcykKPiAgewo+IEBAIC0yMjgyLDYgKzIzMDMsOSBAQCBzdGF0aWMg aW50IGdwbWlfaW5pdF9sYXN0KHN0cnVjdCBncG1pX25hbmRfZGF0YSAqdGhpcykKPiAgCWlmIChy ZXQpCj4gIAkJcmV0dXJuIHJldDsKPiAgCj4gKwkvKiBzYXZlIEJDSCBnZW9tZXRyeSB0byBkZWJ1 Z2ZzIGlmIENPTkZJR19ERUJVR19GUyBpcyBlbmFibGVkICovCj4gKwliY2hfY3JlYXRlX2RlYnVn ZnModGhpcyk7CgpZb3UgbmVlZCB0byBjYWxsIGRlYnVnZnNfcmVtb3ZlX3JlY3Vyc2l2ZSgpIGlu IHRoZSByZW1vdmFsIHBhdGguCgo+ICsKPiAgCS8qIEluaXQgdGhlIG5hbmRfZWNjX2N0cmx7fSAq Lwo+ICAJZWNjLT5yZWFkX3BhZ2UJPSBncG1pX2VjY19yZWFkX3BhZ2U7Cj4gIAllY2MtPndyaXRl X3BhZ2UJPSBncG1pX2VjY193cml0ZV9wYWdlOwo+Cj4gLS0tCj4gYmFzZS1jb21taXQ6IGY5N2Jk YzhlYzFkYzdiMzM3ODFhNzAyZWViYTU1MzI2YzIwNmJlNTYKPiBjaGFuZ2UtaWQ6IDIwMjYwNzI3 LW5hbmRfZGVidWdmcy03NGQ2ZDZiYTUyZGYKPgo+IEJlc3QgcmVnYXJkcywKClRoYW5rcywKTWlx dcOobAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fCkxpbnV4IE1URCBkaXNjdXNzaW9uIG1haWxpbmcgbGlzdApodHRwOi8vbGlzdHMuaW5mcmFk ZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LW10ZC8K