From nobody Mon Feb 9 07:25:32 2026 Received: from smtp.gentoo.org (woodpecker.gentoo.org [140.211.166.183]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8850517BB21; Tue, 23 Dec 2025 02:25:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=140.211.166.183 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766456751; cv=none; b=AzxJPhivo1iA6dnivagyh4sGRqltevOiO4mxOairMLByHMWIh8kb2Srgo9LVw4SmO6LZ9rSVuKsAm78D2OQO+cNsgavw6+NI+3FXT/Efzvmo1nE3Uzuwv8S+Syne1f2Bt8gxz+m6f7tBf3KQykw6PuXRChcFYb/RaUZh4MKp43g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766456751; c=relaxed/simple; bh=Tv4IIxbajJGdC0Qo4tZIq/kiXMWsMML3XzBX/R1wVC8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=LWEiVvRuXc0K7vcBWir0B8hp5Zu9RUw0DyxeruF5pf9+0RH5p7H34n1xcCr4enp4tVmUmca+HxN164MlL5JbFzFpbc5lgQzAxOpaeo4Bu9waFOj9zaeV5KsTSg9Bm8BYOJi1MwafYBpcNOBbrN/XVDLFoeMsbHuQqdbBjIJ+qPk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gentoo.org; spf=pass smtp.mailfrom=gentoo.org; arc=none smtp.client-ip=140.211.166.183 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gentoo.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gentoo.org Received: from [127.0.0.1] (unknown [116.232.18.222]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: dlan) by smtp.gentoo.org (Postfix) with ESMTPSA id E0DD93415D2; Tue, 23 Dec 2025 02:25:38 +0000 (UTC) From: Yixun Lan Date: Tue, 23 Dec 2025 10:24:49 +0800 Subject: [PATCH v2 1/3] dt-bindings: mmc: spacemit,sdhci: add reset support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251223-07-k1-sdhci-reset-v2-1-5b8248cfc522@gentoo.org> References: <20251223-07-k1-sdhci-reset-v2-0-5b8248cfc522@gentoo.org> In-Reply-To: <20251223-07-k1-sdhci-reset-v2-0-5b8248cfc522@gentoo.org> To: Ulf Hansson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Adrian Hunter , Philipp Zabel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: Iker Pedrosa , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, Yixun Lan X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1032; i=dlan@gentoo.org; h=from:subject:message-id; bh=Tv4IIxbajJGdC0Qo4tZIq/kiXMWsMML3XzBX/R1wVC8=; b=kA0DAAoBMarqR1lNu+0ByyZiAGlJ/Y7I8qJX1p/wYpFnsoywTU9g9XUUIyW2CWKGIFxnlYYfi IkCrwQAAQoAmRYhBLW6uMnDG3EVZwIj3DGq6kdZTbvtBQJpSf2OGxSAAAAAAAQADm1hbnUyLDIu NSsxLjExLDIsMl8UgAAAAAAuAChpc3N1ZXItZnByQG5vdGF0aW9ucy5vcGVucGdwLmZpZnRoaG9 yc2VtYW4ubmV0QjVCQUI4QzlDMzFCNzExNTY3MDIyM0RDMzFBQUVBNDc1OTREQkJFRAAKCRAxqu pHWU277YFbD/9FnfELT45pvSQ81a+V+pOmcfKhnGgLnrQxUU/13qf9VwBCKGsfdS/w+jTj2sp8l LT5+DQYbQ1NSNyC27NQE96aJ5OAQVhaLu15LASyysu8DebeJeZKUiYT3LAP1tnm3rcNsVXQOU7i hHkat94/w1H5XR3UFPsaqj7T3bRm9cF8A0WFs3y49gPfdtN5GiRoAebWzD/m7PG2uFfiDvB5uSt +lUKD0BZcGJD6KfOj5hlCFt9mhgS9pc1Q1KpnYfwzLMaTjTPR9H9Ug5DXMTJY8OdF5ntWDT4cwK T6AY/8edOmApXZFvJkIX1RWRdJXDnVSuKXgeOFlDD494YjVvLbgoNzIiprmLPcorJQ+VKrm3C1y VvlJ0qzMqmKCyZqou6oqNhZs4b/qIuda2/dq0EE1Ry6lAUqbVKZLzdWL3o9iL+hPH6AhI3yumhw OjeApM5SUr4FjoCndony47Ps9U87dD5T+XZSbxAtEGH/6gkoYy6p3b/pcHWOM/ZnC/ECPUI49nu e72LVXx8lTaGtj4di0W58yV4HL+GmVDmILg6TVICkDGUmbkjBtQfA9rtdLQ8rRiABOuGce+HLdg nHy3/jd1bFdigNYg5umn1QhnbruAcHx8Mwu7IjwZW/N/cSIXN6x1AVS8y0OWJypNmQMdP3ulZc9 6QuKDMNbYIGlYgN0ALZAg== X-Developer-Key: i=dlan@gentoo.org; a=openpgp; fpr=50B03A1A5CBCD33576EF8CD7920C0DBCAABEFD55 The SpacemiT SDHCI controller has two reset lines, one connect to AXI bus which shared by all controllers, while another one connect to individual controller separately. Signed-off-by: Yixun Lan Reviewed-by: Javier Martinez Canillas Reviewed-by: Krzysztof Kozlowski --- Documentation/devicetree/bindings/mmc/spacemit,sdhci.yaml | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/spacemit,sdhci.yaml b/Do= cumentation/devicetree/bindings/mmc/spacemit,sdhci.yaml index 13d9382058fb..de4e9efeb666 100644 --- a/Documentation/devicetree/bindings/mmc/spacemit,sdhci.yaml +++ b/Documentation/devicetree/bindings/mmc/spacemit,sdhci.yaml @@ -32,6 +32,16 @@ properties: - const: core - const: io =20 + resets: + items: + - description: axi reset, connect to AXI bus, shared by all controll= ers + - description: sdh reset, connect to individual controller separately + + reset-names: + items: + - const: axi + - const: sdh + required: - compatible - reg --=20 2.52.0 From nobody Mon Feb 9 07:25:32 2026 Received: from smtp.gentoo.org (woodpecker.gentoo.org [140.211.166.183]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A2EB2199EAD; Tue, 23 Dec 2025 02:26:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=140.211.166.183 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766456770; cv=none; b=OTfiSg3hcmG4AgagQGWjacj3wqTF8X/T6t1Bs2aBnQmuiC1EOxUqoArLOkjnZeHXoOXlSimaXPIi4k/4/WRQaflZc45ZV8TgYIt1qHJ6jDY3IXOVbgXSlTt6iUX3Z5eRY5j0KUfHo1ZBAb89dAnK05s3hPFZBttXCQbRC61B7l0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766456770; c=relaxed/simple; bh=ce4+Y523rDAIPKLiYiVpepgukJhlsG9n/nV8mNpv9ac=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=TwMvIDCmEv/uTRb6I7x4ZZlzcTUA8xik+nXia9KYtoBXYV8nHbvSTgdgAQJOsiWMtAmpjE/ZSw+pnCi8qI8eqSDuAAIS41ewgOtMo8V/RuGKJvv6Itmp8u5auGzNBFjUp9jc6U0O93c01F1qUSryY5XofA5TWDFmRIkB7lbz7yc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gentoo.org; spf=pass smtp.mailfrom=gentoo.org; arc=none smtp.client-ip=140.211.166.183 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gentoo.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gentoo.org Received: from [127.0.0.1] (unknown [116.232.18.222]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: dlan) by smtp.gentoo.org (Postfix) with ESMTPSA id C4511340EA8; Tue, 23 Dec 2025 02:25:49 +0000 (UTC) From: Yixun Lan Date: Tue, 23 Dec 2025 10:24:50 +0800 Subject: [PATCH v2 2/3] mmc: sdhci-of-k1: add reset support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251223-07-k1-sdhci-reset-v2-2-5b8248cfc522@gentoo.org> References: <20251223-07-k1-sdhci-reset-v2-0-5b8248cfc522@gentoo.org> In-Reply-To: <20251223-07-k1-sdhci-reset-v2-0-5b8248cfc522@gentoo.org> To: Ulf Hansson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Adrian Hunter , Philipp Zabel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: Iker Pedrosa , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, Yixun Lan X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1648; i=dlan@gentoo.org; h=from:subject:message-id; bh=ce4+Y523rDAIPKLiYiVpepgukJhlsG9n/nV8mNpv9ac=; b=owEB6QIW/ZANAwAKATGq6kdZTbvtAcsmYgBpSf2RfD2WwXFPXDLAErvhZvwCQk/JdthhMjeBu ZTBA+ana8iJAq8EAAEKAJkWIQS1urjJwxtxFWcCI9wxqupHWU277QUCaUn9kRsUgAAAAAAEAA5t YW51MiwyLjUrMS4xMSwyLDJfFIAAAAAALgAoaXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5 maWZ0aGhvcnNlbWFuLm5ldEI1QkFCOEM5QzMxQjcxMTU2NzAyMjNEQzMxQUFFQTQ3NTk0REJCRU QACgkQMarqR1lNu+1j7w//WGx4F5u5HzGEmjh06B8CmVMVWyJYbEA9sutT2S4yyhY9+sfDGp/CW pShubJaaMJXUqQcBvOV1cugEmFLOQsYwEGhSuck5HScWZljcRkUyVf+QYjm8z0rJXlamzI7qu2x Iu6DGdvvnjkT39Px5+UdVpbQfsI5ESh5KC7oVuqSJM1i1AjclD62J5vpJtiyzZGqw13IM22x6Ka xXPVOzF1tuE9z0VpcRVsaQsdWn1jZSMr1I3Olwp6eJsZtwoKVgP/H4o7mIbTTMctiPnnlc20yAK vBK8ZbVOBtmRdMAyJ+3VtJOQC3J9rCFFojZLj8DGvEOAn3zckuOXi9oXz/1dC3ex+Z+BF28ndDp JFtZUKQs3/OD0v8Gyl16pYJ5USrZ2gLwLZNqVHFlZWDgb8Wlb93o2sIfoRI3V1Gor+hb56+blah vKmVdI4SluGKxdyGa6Fb6ifnHgrFXpDZFjN3RAxLf7+N5+kzRHf5mxqY+bnBkFZCahk6MGQ/69p Dp/n2xyccnexDvLaLucA5wZg/hdMugmvvZBf/u0AklAxM7P6ATct8/TMIS3JXz5eOz16m2DoBtC sYpdO2Nx1aARwRHlP41enF51owypBFg462pknnqKZw3PP9fgcpXddonGMPfn/GpkZURYM3jX0VI EoaFshwS6a0yuct3YjW5itkS83d+n0= X-Developer-Key: i=dlan@gentoo.org; a=openpgp; fpr=50B03A1A5CBCD33576EF8CD7920C0DBCAABEFD55 The SDHCI controller of SpacemiT K1 SoC requires two resets, add support to explicitly request the reset line and deassert during initialization phase. Still using devm_xx_get_optional() API to make the request optional. Signed-off-by: Yixun Lan Reviewed-by: Javier Martinez Canillas --- drivers/mmc/host/sdhci-of-k1.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/mmc/host/sdhci-of-k1.c b/drivers/mmc/host/sdhci-of-k1.c index 0cc97e23a2f9..a160e1d5d9bd 100644 --- a/drivers/mmc/host/sdhci-of-k1.c +++ b/drivers/mmc/host/sdhci-of-k1.c @@ -15,6 +15,7 @@ #include #include #include +#include #include =20 #include "sdhci.h" @@ -223,6 +224,21 @@ static inline int spacemit_sdhci_get_clocks(struct dev= ice *dev, return 0; } =20 +static inline int spacemit_sdhci_get_resets(struct device *dev) +{ + struct reset_control *rst; + + rst =3D devm_reset_control_get_optional_shared_deasserted(dev, "axi"); + if (IS_ERR(rst)) + return PTR_ERR(rst); + + rst =3D devm_reset_control_get_optional_exclusive_deasserted(dev, "sdh"); + if (IS_ERR(rst)) + return PTR_ERR(rst); + + return 0; +} + static const struct sdhci_ops spacemit_sdhci_ops =3D { .get_max_clock =3D spacemit_sdhci_clk_get_max_clock, .reset =3D spacemit_sdhci_reset, @@ -284,6 +300,10 @@ static int spacemit_sdhci_probe(struct platform_device= *pdev) if (ret) goto err_pltfm; =20 + ret =3D spacemit_sdhci_get_resets(dev); + if (ret) + goto err_pltfm; + ret =3D sdhci_add_host(host); if (ret) goto err_pltfm; --=20 2.52.0 From nobody Mon Feb 9 07:25:32 2026 Received: from smtp.gentoo.org (woodpecker.gentoo.org [140.211.166.183]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 65DF424466B; Tue, 23 Dec 2025 02:26:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=140.211.166.183 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766456785; cv=none; b=GB/M0K32l22mBY8ycwXGB/n2EVQS8+UFXumSwbDSR71+ouMbOtbdaUpO3rldD8bNnlVRJYi63yzKRixZXq6EVxh5SPbT95QK9b2lTXGK1R/aBqccI4uybpHetE3xmugSSxbxY2n4RMVisSEOX4stg4SnwQPmmZo2GhP9vS4yx+Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766456785; c=relaxed/simple; bh=WfOYufxvp5VMhrnMCPsjsrXQPRkHTzjLxnD+Xz6ivlk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=dhqUN120W6TvSXC/q0078/Pa5uZppIBe/MDt8AQMVMIzFupDbTFyU2NYmaXT6yQP2S2Zpy077/n6R6ZtMaobl/WIU7jhflqLbXflwb4MgTvzZu0ItqIBEZ1mcRlTDwvINZDjxao1mYikjrlbGgO0fPsAFgr5dwWaqnHURZI6D+M= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gentoo.org; spf=pass smtp.mailfrom=gentoo.org; arc=none smtp.client-ip=140.211.166.183 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gentoo.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gentoo.org Received: from [127.0.0.1] (unknown [116.232.18.222]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: dlan) by smtp.gentoo.org (Postfix) with ESMTPSA id 3ACE13415DD; Tue, 23 Dec 2025 02:26:08 +0000 (UTC) From: Yixun Lan Date: Tue, 23 Dec 2025 10:24:51 +0800 Subject: [PATCH v2 3/3] riscv: dts: spacemit: sdhci: add reset support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251223-07-k1-sdhci-reset-v2-3-5b8248cfc522@gentoo.org> References: <20251223-07-k1-sdhci-reset-v2-0-5b8248cfc522@gentoo.org> In-Reply-To: <20251223-07-k1-sdhci-reset-v2-0-5b8248cfc522@gentoo.org> To: Ulf Hansson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Adrian Hunter , Philipp Zabel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: Iker Pedrosa , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, Yixun Lan X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=752; i=dlan@gentoo.org; h=from:subject:message-id; bh=WfOYufxvp5VMhrnMCPsjsrXQPRkHTzjLxnD+Xz6ivlk=; b=owEB6QIW/ZANAwAKATGq6kdZTbvtAcsmYgBpSf2Uucl1qr5TmUawQcdzR4PIfSp9kyxzSv/yz PhahUxU5BuJAq8EAAEKAJkWIQS1urjJwxtxFWcCI9wxqupHWU277QUCaUn9lBsUgAAAAAAEAA5t YW51MiwyLjUrMS4xMSwyLDJfFIAAAAAALgAoaXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5 maWZ0aGhvcnNlbWFuLm5ldEI1QkFCOEM5QzMxQjcxMTU2NzAyMjNEQzMxQUFFQTQ3NTk0REJCRU QACgkQMarqR1lNu+3XNQ//eYdMzOQ0oNwD8UAs4I2h2FebWTvA52uAR5X/c4zETbSMw43ghGjSi W37ngE/k3didWdZtkpkP1ddewJHTwjVWOgtXZ4GbqQ892SgNS3UShz9P8KzcEj3Ip1KIMl01jAf CdzreJN/Im3YzRv/+E8gRp0FZ5qy3dXs33gmBm9Ts94T43DFuMqQsUUyxv6kG6y1zwKD3OXY5Ix Tt1vfS7WR2/dS9rd6bD5FjU5EzKm5ol/4qoe6Ugr8KD+pc6zjJUBZpgIoifqE5NMv/HZT6KEgMH eWEhmwgb1VOoW4BvgA0LzQ9a04IgQcFQ9uNI94/iFW3O5KW5nrGQMbTbzMu5INLOkv+xqY0RIvv tqfhG63qLUbVEz/vl5LF7nUUS+2/2Ew3CUuDQn+Y0zdCBD0xMrD6e4sfYaBgWa2Q/qL0aoN/STc Y534dyH+YrtUiuxX//I3HtZIsXbyV6F2riQrD6P6sYPSm9BGruACul2uo9/06aoiMSIB5sTlJnV geR8EhEb95iELSRA9hNKoFuh35d353FtyF6RFX6dPGD55M3URtJl6TLvlVZ4O5KVsHumUgBM7MD XG6sCnocTCuU9jol+SlnyeYxqVHWGpwniXwlGmgabt2sTdBq9OdzlBiLula9myjbbsbr+ilx7Lk hXQhyoFwp7osS//19zV9oSMphyj/mI= X-Developer-Key: i=dlan@gentoo.org; a=openpgp; fpr=50B03A1A5CBCD33576EF8CD7920C0DBCAABEFD55 Request two reset line explicitly for SDHCI controller. Signed-off-by: Yixun Lan Reviewed-by: Javier Martinez Canillas --- arch/riscv/boot/dts/spacemit/k1.dtsi | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spa= cemit/k1.dtsi index 7818ca4979b6..7dd41d6dcb85 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -984,6 +984,9 @@ emmc: mmc@d4281000 { clocks =3D <&syscon_apmu CLK_SDH_AXI>, <&syscon_apmu CLK_SDH2>; clock-names =3D "core", "io"; + resets =3D <&syscon_apmu RESET_SDH_AXI>, + <&syscon_apmu RESET_SDH2>; + reset-names =3D "axi", "sdh"; interrupts =3D <101>; status =3D "disabled"; }; --=20 2.52.0