From patchwork Wed May 5 09:41:27 2021
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Pratyush Yadav
X-Patchwork-Id: 1474237
X-Patchwork-Delegate: jagannadh.teki@gmail.com
Return-Path:
X-Original-To: incoming@patchwork.ozlabs.org
Delivered-To: patchwork-incoming@bilbo.ozlabs.org
Authentication-Results: ozlabs.org;
spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de
(client-ip=85.214.62.61; helo=phobos.denx.de;
envelope-from=u-boot-bounces@lists.denx.de; receiver=)
Authentication-Results: ozlabs.org;
dkim=pass (1024-bit key;
unprotected) header.d=ti.com header.i=@ti.com header.a=rsa-sha256
header.s=ti-com-17Q1 header.b=TxLGCcFJ;
dkim-atps=neutral
Received: from phobos.denx.de (phobos.denx.de [85.214.62.61])
(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
key-exchange X25519 server-signature RSA-PSS (4096 bits))
(No client certificate requested)
by ozlabs.org (Postfix) with ESMTPS id 4FZsJq2WVBz9s1l
for ; Wed, 5 May 2021 19:45:31 +1000 (AEST)
Received: from h2850616.stratoserver.net (localhost [IPv6:::1])
by phobos.denx.de (Postfix) with ESMTP id EA69482D5B;
Wed, 5 May 2021 11:42:59 +0200 (CEST)
Authentication-Results: phobos.denx.de;
dmarc=pass (p=quarantine dis=none) header.from=ti.com
Authentication-Results: phobos.denx.de;
spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de
Authentication-Results: phobos.denx.de;
dkim=pass (1024-bit key;
unprotected) header.d=ti.com header.i=@ti.com header.b="TxLGCcFJ";
dkim-atps=neutral
Received: by phobos.denx.de (Postfix, from userid 109)
id 4A47682D4E; Wed, 5 May 2021 11:42:55 +0200 (CEST)
X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de
X-Spam-Level:
X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,
DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,SPF_HELO_NONE autolearn=ham
autolearn_force=no version=3.4.2
Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142])
(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
(No client certificate requested)
by phobos.denx.de (Postfix) with ESMTPS id B3AF782D2C
for ; Wed, 5 May 2021 11:42:48 +0200 (CEST)
Authentication-Results: phobos.denx.de;
dmarc=pass (p=quarantine dis=none) header.from=ti.com
Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=p.yadav@ti.com
Received: from lelv0266.itg.ti.com ([10.180.67.225])
by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 1459gfPX129402;
Wed, 5 May 2021 04:42:41 -0500
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com;
s=ti-com-17Q1; t=1620207761;
bh=eer+os3n8pUNNJBzXpAukmBSc27L3gQYSxgMNQf5bW8=;
h=From:To:CC:Subject:Date:In-Reply-To:References;
b=TxLGCcFJbOC/T7u+AMfUVmlWt8YZfhzm2bMrsE/yI3TLj3C4JbXSXXCSwvWMdWrJJ
EomnUvzmamQb0fnYx2RukYGfeHKzJIVU6MrtV2OvckOoLrA4bKXddXIwpVgwl0pwHE
Mhv/ISAK9ux+4bafxGDTseIrB4MZyr3tl5QKNTgA=
Received: from DFLE101.ent.ti.com (dfle101.ent.ti.com [10.64.6.22])
by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 1459gfBw012988
(version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL);
Wed, 5 May 2021 04:42:41 -0500
Received: from DFLE108.ent.ti.com (10.64.6.29) by DFLE101.ent.ti.com
(10.64.6.22) with Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Wed, 5 May
2021 04:42:40 -0500
Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE108.ent.ti.com
(10.64.6.29) with Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2 via
Frontend Transport; Wed, 5 May 2021 04:42:40 -0500
Received: from pratyush-OptiPlex-790.dhcp.ti.com (ileax41-snat.itg.ti.com
[10.172.224.153])
by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 1459fcL2053048;
Wed, 5 May 2021 04:42:37 -0500
From: Pratyush Yadav
To: Chris Packham , Jagan Teki
, Vignesh R , Ryder Lee
, Weijie Gao ,
Chunfeng Yun , GSS_MTK_Uboot_upstream
,
CC: Pratyush Yadav , Takahiro Kuwano
, Sean Anderson
Subject: [PATCH v9 17/28] mtd: spi-nor-core: Get command opcode extension type
from BFPT
Date: Wed, 5 May 2021 15:11:27 +0530
Message-ID: <20210505094138.30805-18-p.yadav@ti.com>
X-Mailer: git-send-email 2.30.0
In-Reply-To: <20210505094138.30805-1-p.yadav@ti.com>
References: <20210505094138.30805-1-p.yadav@ti.com>
MIME-Version: 1.0
X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180
X-BeenThere: u-boot@lists.denx.de
X-Mailman-Version: 2.1.34
Precedence: list
List-Id: U-Boot discussion
List-Unsubscribe: ,
List-Archive:
List-Post:
List-Help:
List-Subscribe: ,
Errors-To: u-boot-bounces@lists.denx.de
Sender: "U-Boot"
X-Virus-Scanned: clamav-milter 0.102.4 at phobos.denx.de
X-Virus-Status: Clean
Some devices in DTR mode expect an extra command byte called the
extension. The extension can either be same as the opcode, bitwise
inverse of the opcode, or another additional byte forming a 16-byte
opcode. Get the extension type from the BFPT. For now, only flashes with
"repeat" and "inverse" extensions are supported.
Signed-off-by: Pratyush Yadav
---
drivers/mtd/spi/spi-nor-core.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c
index 6ce63994ff..7704a62d62 100644
--- a/drivers/mtd/spi/spi-nor-core.c
+++ b/drivers/mtd/spi/spi-nor-core.c
@@ -149,6 +149,12 @@ struct sfdp_header {
#define BFPT_DWORD15_QER_SR2_BIT1_NO_RD (0x4UL << 20)
#define BFPT_DWORD15_QER_SR2_BIT1 (0x5UL << 20) /* Spansion */
+#define BFPT_DWORD18_CMD_EXT_MASK GENMASK(30, 29)
+#define BFPT_DWORD18_CMD_EXT_REP (0x0UL << 29) /* Repeat */
+#define BFPT_DWORD18_CMD_EXT_INV (0x1UL << 29) /* Invert */
+#define BFPT_DWORD18_CMD_EXT_RES (0x2UL << 29) /* Reserved */
+#define BFPT_DWORD18_CMD_EXT_16B (0x3UL << 29) /* 16-bit opcode */
+
struct sfdp_bfpt {
u32 dwords[BFPT_DWORD_MAX];
};
@@ -2040,6 +2046,24 @@ static int spi_nor_parse_bfpt(struct spi_nor *nor,
return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt,
params);
+ /* 8D-8D-8D command extension. */
+ switch (bfpt.dwords[BFPT_DWORD(18)] & BFPT_DWORD18_CMD_EXT_MASK) {
+ case BFPT_DWORD18_CMD_EXT_REP:
+ nor->cmd_ext_type = SPI_NOR_EXT_REPEAT;
+ break;
+
+ case BFPT_DWORD18_CMD_EXT_INV:
+ nor->cmd_ext_type = SPI_NOR_EXT_INVERT;
+ break;
+
+ case BFPT_DWORD18_CMD_EXT_RES:
+ return -EINVAL;
+
+ case BFPT_DWORD18_CMD_EXT_16B:
+ dev_err(nor->dev, "16-bit opcodes not supported\n");
+ return -ENOTSUPP;
+ }
+
return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt, params);
}