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[187.190.202.235]) by smtp.gmail.com with ESMTPSA id 5614622812f47-441cc9a25cesm3084804b6e.26.2025.10.15.15.17.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Oct 2025 15:17:08 -0700 (PDT) Date: Wed, 15 Oct 2025 16:17:06 -0600 From: Tom Rini To: Boon Khai Ng Cc: Jagan Teki , u-boot@lists.denx.de, Tien Fong Chee Subject: Re: [PATCH v1 1/2] spi: cadence: Add driver for xSPI Message-ID: <20251015221706.GU6113@bill-the-cat> References: <20251014101354.11182-1-boon.khai.ng@altera.com> <20251014101354.11182-2-boon.khai.ng@altera.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="4YsOkGnqk5oEkW3j" Content-Disposition: inline In-Reply-To: <20251014101354.11182-2-boon.khai.ng@altera.com> X-Clacks-Overhead: GNU Terry Pratchett X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 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 0.103.8 at phobos.denx.de X-Virus-Status: Clean --4YsOkGnqk5oEkW3j Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Oct 14, 2025 at 06:13:53PM +0800, Boon Khai Ng wrote: > This patch ports the Cadence xSPI controller driver from > the Linux kernel. The controller supports three operating modes: >=20 > 1. ACMD (Auto Command) mode > - Includes PIO and CDMA submodes. > - CDMA mode uses linked descriptors for high-performance, > low-overhead operation. > - PIO mode is suitable for simple, single-command transactions. >=20 > 2. STIG (Software Triggered Instruction Generator) mode > - Issues low-level 128-bit instructions to memory. > - Uses the Slave DMA interface for data transfers. >=20 > 3. Direct mode > - Enables direct data access through the slave interface > without commands. >=20 > Currently, only the STIG work mode is enabled. Additional modes will be > supported in future updates. >=20 > This driver has been ported and functionally verified on the Intel Simics > platform. It is intended for evaluation and experimental use at this stag= e. >=20 > Link: https://lore.kernel.org/all/1632038734-23999-1-git-send-email-pthom= bar@cadence.com/ >=20 > Signed-off-by: Boon Khai Ng What's the status of the related binding in the linux kernel? --=20 Tom --4YsOkGnqk5oEkW3j Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTzzqh0PWDgGS+bTHor4qD1Cr/kCgUCaPAdXwAKCRAr4qD1Cr/k CnbgAP9mGYIF4jjumpGmZof9wHpvbMa8tqt9Qp12GSZaMgm+5QEAu3Rtt2Z86Grc bUg3iC4pSXcpqxDE68jFbdjwTPZ0AwE= =BOgw -----END PGP SIGNATURE----- --4YsOkGnqk5oEkW3j--