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Mon, 8 Apr 2024 12:10:20 +0300 (MSK) Received: from localhost.localdomain (100.64.160.123) by p-i-exch-sc-m02.sberdevices.ru (172.16.192.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Mon, 8 Apr 2024 12:10:20 +0300 From: Arseniy Krasnov To: Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl CC: , , , , , , , Arseniy Krasnov Subject: [PATCH v2 0/2] Meson: R/W support for pages used by boot ROM Date: Mon, 8 Apr 2024 11:59:29 +0300 Message-ID: <20240408085931.456337-1-avkrasnov@salutedevices.com> X-Mailer: git-send-email 2.35.0 MIME-Version: 1.0 X-Originating-IP: [100.64.160.123] X-ClientProxiedBy: p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) To p-i-exch-sc-m02.sberdevices.ru (172.16.192.103) X-KSMG-Rule-ID: 10 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 184614 [Apr 08 2024] X-KSMG-AntiSpam-Version: 6.1.0.4 X-KSMG-AntiSpam-Envelope-From: avkrasnov@salutedevices.com X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Info: LuaCore: 15 0.3.15 adb41f89e2951eb37b279104a7abb8e79494a5e7, {Tracking_from_domain_doesnt_match_to}, smtp.sberdevices.ru:5.0.1,7.1.1;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;salutedevices.com:7.1.1;127.0.0.199:7.1.2;100.64.160.123:7.1.2, FromAlignment: s, ApMailHostAddress: 100.64.160.123 X-MS-Exchange-Organization-SCL: -1 X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiPhishing: Clean X-KSMG-LinksScanning: Clean X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.0.1.6960, bases: 2024/04/08 06:07:00 #24706059 X-KSMG-AntiVirus-Status: Clean, skipped X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240408_021028_364488_F88B2AFF X-CRM114-Status: GOOD ( 12.31 ) X-Spam-Score: -0.2 (/) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Amlogic's boot ROM code needs that some pages on NAND must be written in special "short" ECC mode with scrambling enabled. Such pages: 1) Contain some metadata about hardware. 2) Located with some int [...] Content analysis details: (-0.2 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 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: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Amlogic's boot ROM code needs that some pages on NAND must be written in special "short" ECC mode with scrambling enabled. Such pages: 1) Contain some metadata about hardware. 2) Located with some interval starting from 0 offset, until some specified offset. Interval and second offset are set in the device tree. This patchset adds R/W support for such pages. To enable it we can setup it in dts: nand-is-boot-medium; amlogic,boot-page-last = <1024>; amlogic,boot-page-step = <128>; It means that each 128th page in range 0 to 1024 pages will be accessed in special mode ("short" ECC + scrambling). In practice this feature is needed when we want to update first block of NAND - driver will enable required mode by itself using value from device tree. Changelog: v1 -> v2: * Rename 'meson,boot-page-XXX' -> 'amlogic,boot-page-XXX'. * Add words that 'amlogic,boot-page-step' is measured in pages. * Remove words that 'amlogic,boot-page-XXX' depends on 'nand-is-boot-medium'. * Make both 'amlogic,boot-page-XXX' depend on each other also, in addition to 'nand-is-boot-medium' dependency. Arseniy Krasnov (2): dt-bindings: mtd: amlogic,meson-nand: support fields for boot ROM code mtd: rawnand: meson: support R/W mode for boot ROM .../bindings/mtd/amlogic,meson-nand.yaml | 14 +++ drivers/mtd/nand/raw/meson_nand.c | 88 +++++++++++++------ 2 files changed, 73 insertions(+), 29 deletions(-)