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Signed-off-by: Bjorn Andersson Reviewed-by: Taniya Das --- include/dt-bindings/clock/qcom,dispcc-sc7280.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/dt-bindings/clock/qcom,dispcc-sc7280.h b/include/dt-bi= ndings/clock/qcom,dispcc-sc7280.h index a4a692c20acfc954251fd1a1a59239ac62b20015..9f113f346be80b8a7815ffb17a6= a6ce5e008f663 100644 --- a/include/dt-bindings/clock/qcom,dispcc-sc7280.h +++ b/include/dt-bindings/clock/qcom,dispcc-sc7280.h @@ -52,4 +52,8 @@ /* DISP_CC power domains */ #define DISP_CC_MDSS_CORE_GDSC 0 =20 +/* DISPCC resets */ +#define DISP_CC_MDSS_CORE_BCR 0 +#define DISP_CC_MDSS_RSCC_BCR 1 + #endif --=20 2.49.0 From nobody Sat Oct 4 22:36:05 2025 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 194ED2D9EE1 for ; Tue, 12 Aug 2025 03:11:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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[104.57.184.186]) by smtp.gmail.com with ESMTPSA id 586e51a60fabf-307a717f0c9sm8174531fac.13.2025.08.11.20.11.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Aug 2025 20:11:50 -0700 (PDT) From: Bjorn Andersson Date: Mon, 11 Aug 2025 22:11:34 -0500 Subject: [PATCH 2/3] clk: qcom: dispcc-sc7280: Add dispcc resets 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: <20250811-sc7280-mdss-reset-v1-2-83ceff1d48de@oss.qualcomm.com> References: <20250811-sc7280-mdss-reset-v1-0-83ceff1d48de@oss.qualcomm.com> In-Reply-To: <20250811-sc7280-mdss-reset-v1-0-83ceff1d48de@oss.qualcomm.com> To: Bjorn Andersson , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , cros-qcom-dts-watchers@chromium.org, Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Andersson X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1583; i=bjorn.andersson@oss.qualcomm.com; h=from:subject:message-id; bh=8khlXtaflpZlnDLhiEfY7BGqjnGu+2kL/Rh6j0ZMjrU=; b=owEBgwJ8/ZANAwAIAQsfOT8Nma3FAcsmYgBomrDzSqU/NM8jmSnSjzTdqUtn5wqfjecU3n6mO h7DlhCi5sGJAkkEAAEIADMWIQQF3gPMXzXqTwlm1SULHzk/DZmtxQUCaJqw8xUcYW5kZXJzc29u QGtlcm5lbC5vcmcACgkQCx85Pw2ZrcXcaA//cYeSoAPeEiSTb34yx3JFUugrCvYZV+1g0hsCCMa DXdQ0+v7+S5VVLcAPkgUB30wWDqz3lblMwxoJAuU9cQ4fsEA41/G38mqrzlGOuwtJsbFsxu5OII 8O4wop8UjHGoQquHIdnRPNYse4leEhzOd4/KEwebrFL+eja1zPEnbBm4twTRrPu3X0tDF0uhYv9 mg/HHFImT4cMSll0kwQD9wsfBcSCVR8iA1GihmqJYB7CjOyEtZBogoMbR1MZxBW9dGrpcrH3qqo 5tLphSEx0WLMEG9+/lJL5pkkPy+C2l3lk7jROehc8bTzjxwfr/b873Wf2C6233sUg3Rwh6Gxnrv E++NojgPXnh35RMtnouvto3/cNrp0eTUzTBSN1dZOp2HjJ/3kV5JlATXXxB0wIShho9M2+j3DYV AwtXolgw7NgT2UgIZQnwNFzK1mHof7yEu+05+eCGTa/0AJrHZ03v9lVWO1WzPMCF3zxgDYMy/6b sQfeb6Dfn7S3zsRCSNCbzkmzGu6UcdU4ogq5JxrEbGAwcXJb/jLZTgZe/q/IBVZM62k+MQEsZ+0 opvFyU9VWMxAY5GPZoHFGXF1ls2mGT38S2L/odx1XWEaN9zrHqoOJxB/QVuVExvEKHUAJR65bTD q1TyiBh/bUbKrOdegRTp7MzbUDdLkT/fHVGu9/r1XxUw= X-Developer-Key: i=bjorn.andersson@oss.qualcomm.com; a=openpgp; fpr=05DE03CC5F35EA4F0966D5250B1F393F0D99ADC5 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODExMDEwNyBTYWx0ZWRfXzNoNcODULSrO HJr49O1z9E/HHUNbr4cc+nJIUBqk58nw6mPVuewEIuzSr+8iQBCcvWlBvOlnhi1jJZ7fpAlxQ/W jC+usm0rS+mHNAP7cyp/ITCgsb/m7Mo4gZoYfU6ubw3nkwcWTO/VCR5w4Pwt+oCf7fa86RQu1WM BrPs050QX8nbJFZiZiEkaZLHGq/mzydu96+R311+vG7/H8rKFclp+z86j8axRrDSC9/ZoIjX5NI DzLRWWi1Su1QaNVxv0enRrfShi1bmM++0/FdOLsMy8xqY6E3LA/OKlzyTUmwZbHtgY93CC/zzwZ 9mHAfvKwjsh8DvJ5JaaY0uEZnJvzsaEKI+/4INFP71FUd/un/YZ/t7UKiz+HkUheEeG9vRzER5v apx3ij8f X-Proofpoint-GUID: 1uAEke_FFqO-dsYk_AF4ks6dHkXEIjcu X-Authority-Analysis: v=2.4 cv=A+1sP7WG c=1 sm=1 tr=0 ts=689ab0f7 cx=c_pps a=zPxD6eHSjdtQ/OcAcrOFGw==:117 a=DaeiM5VmU20ml6RIjrOvYw==:17 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=EUspDBNiAAAA:8 a=12A6hGN33XcstJ_aBzoA:9 a=QEXdDO2ut3YA:10 a=y8BKWJGFn5sdPF1Y92-H:22 X-Proofpoint-ORIG-GUID: 1uAEke_FFqO-dsYk_AF4ks6dHkXEIjcu X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-12_01,2025-08-11_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 priorityscore=1501 malwarescore=0 spamscore=0 phishscore=0 clxscore=1015 adultscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508110107 Like many other platforms the sc7280 display clock controller provides a couple of resets for the display subsystem. In particular the MDSS_CORE_BCR is useful to reset the display subsystem to a known state during boot, so add these. Signed-off-by: Bjorn Andersson Reviewed-by: Taniya Das --- drivers/clk/qcom/dispcc-sc7280.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/clk/qcom/dispcc-sc7280.c b/drivers/clk/qcom/dispcc-sc7= 280.c index 8bdf57734a3d47fdf8bd2053640d8ef462677556..465dc06c87128182348a4e0ea38= 4af779647bd84 100644 --- a/drivers/clk/qcom/dispcc-sc7280.c +++ b/drivers/clk/qcom/dispcc-sc7280.c @@ -17,6 +17,7 @@ #include "clk-regmap-divider.h" #include "common.h" #include "gdsc.h" +#include "reset.h" =20 enum { P_BI_TCXO, @@ -847,6 +848,11 @@ static struct gdsc *disp_cc_sc7280_gdscs[] =3D { [DISP_CC_MDSS_CORE_GDSC] =3D &disp_cc_mdss_core_gdsc, }; =20 +static const struct qcom_reset_map disp_cc_sc7280_resets[] =3D { + [DISP_CC_MDSS_CORE_BCR] =3D { 0x1000 }, + [DISP_CC_MDSS_RSCC_BCR] =3D { 0x2000 }, +}; + static const struct regmap_config disp_cc_sc7280_regmap_config =3D { .reg_bits =3D 32, .reg_stride =3D 4, @@ -861,6 +867,8 @@ static const struct qcom_cc_desc disp_cc_sc7280_desc = =3D { .num_clks =3D ARRAY_SIZE(disp_cc_sc7280_clocks), .gdscs =3D disp_cc_sc7280_gdscs, .num_gdscs =3D ARRAY_SIZE(disp_cc_sc7280_gdscs), + .resets =3D disp_cc_sc7280_resets, + .num_resets =3D ARRAY_SIZE(disp_cc_sc7280_resets), }; 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[104.57.184.186]) by smtp.gmail.com with ESMTPSA id 586e51a60fabf-307a717f0c9sm8174531fac.13.2025.08.11.20.11.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Aug 2025 20:11:51 -0700 (PDT) From: Bjorn Andersson Date: Mon, 11 Aug 2025 22:11:35 -0500 Subject: [PATCH 3/3] arm64: dts: qcom: sc7280: Add MDSS_CORE reset to mdss 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: <20250811-sc7280-mdss-reset-v1-3-83ceff1d48de@oss.qualcomm.com> References: <20250811-sc7280-mdss-reset-v1-0-83ceff1d48de@oss.qualcomm.com> In-Reply-To: <20250811-sc7280-mdss-reset-v1-0-83ceff1d48de@oss.qualcomm.com> To: Bjorn Andersson , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , cros-qcom-dts-watchers@chromium.org, Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Andersson X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1116; i=bjorn.andersson@oss.qualcomm.com; h=from:subject:message-id; bh=iWKr94l4C+wGOu32iC4kUTBBxAFqi2csewiI06tugUg=; b=owEBgwJ8/ZANAwAIAQsfOT8Nma3FAcsmYgBomrDzaYgQuecT1vAEY3V2vVAU4NXEVxfTC/6Rd umxP8mPc2yJAkkEAAEIADMWIQQF3gPMXzXqTwlm1SULHzk/DZmtxQUCaJqw8xUcYW5kZXJzc29u QGtlcm5lbC5vcmcACgkQCx85Pw2ZrcUNdQ//Wo+tahejLl4GZM4AoSOTHfuxsT5do+dilLRbHjj rdlqhoxNSr6ugRG+IFq3m+xUg/cL17pSIt2PQggpfaBznLV3VgtOZPGLvmsJZ/3KVPPwRL1DR/t ckdcgUOkAD25rsyP3bnXRXl3aqXY0CUhlClw8+at9jnhamIcJRI5Mc9wNgNL8uy7zCA91xNNULs BkqUL2MSm308aA8f1Wj+zDdYysdI2NejeHe+0UqP491ef0a+vUz2qRDNnDd0a8QXk9HucIKv4R4 peWyzOYP92ejK3pShm/s6xOi22trMjqeo1s0Xu570z0bRwQ84E65WG1CH5xQ9CHNW/bAtN8GFsb ur68QWvSlkA96KJqIjDEFm8t8QxbhsO2qK+NIgnsWXYaU5IhxhjCZp/BS6SYHCO2CmYFlPwthIs ZlsKDh6RTr6WTnv+8NRn0AGNxSZeZ/t50RzToI83E4PgXCEolh28d+aUg7KV95VDq3pDM7dCWuS SvJ3KeG21pUC7uYkwNaG61r+ESsGdrBd7kJiMeiRLtAIRFKabW8CUabwu2RK5hWZBQjNa6p2m3p rsGp53CmSxmGIvsxNWFVA2r9q7mB4qD4g+ckKg2AobCz9aFfHF+B8WK2Q8PSBkO67laYa+TlPTj fRepVQHRPrPKQs62ZvsXEfXmAJCGHZzmlGcj9EDTk6zg= X-Developer-Key: i=bjorn.andersson@oss.qualcomm.com; a=openpgp; fpr=05DE03CC5F35EA4F0966D5250B1F393F0D99ADC5 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODEwMDA1NyBTYWx0ZWRfX2PxkbIwa2LHQ Z0LRfIld66erezxO8FqayA7AejgRqT0vGx2EojThVV2GsTZQEOtck0HMvRbQt3WcvpWymGBwyZf HX5dwXb5+uIIYF6nLCrdkrXijV4flVucaGF4D//Gf+92NmdYBAhS/vsSajvaMCilT4oZReAtkAa V6TdKU3YF7wVmzFJtxGm96Lzq+xlt5nDZYeiv3n4wQKCH6e4Y18fQHEHvNB3YSMYFeNbo+/Znqx 28dBw7YEheVy00uW5lpjLhFw0JMpeSE5PFH/K3TG4jpkaD971fNUAiqQqLXMCxg7tIOnp/SF2eh waUClKNTEu13qJCH8dJ5+uTpeYkZ8k5dXQhJG1+fImzo0u8f56NmT+v1BBNDOeGl2cWcxBngxjT 4RugfB4a X-Proofpoint-GUID: ciVxV3LxSygS5OT0oFB1rvarW-3rvv0h X-Authority-Analysis: v=2.4 cv=aYNhnQot c=1 sm=1 tr=0 ts=689ab0f8 cx=c_pps a=nSjmGuzVYOmhOUYzIAhsAg==:117 a=DaeiM5VmU20ml6RIjrOvYw==:17 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=EUspDBNiAAAA:8 a=dOedmflVD102KoYFdoYA:9 a=QEXdDO2ut3YA:10 a=1zu1i0D7hVQfj8NKfPKu:22 X-Proofpoint-ORIG-GUID: ciVxV3LxSygS5OT0oFB1rvarW-3rvv0h X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-12_01,2025-08-11_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 adultscore=0 priorityscore=1501 suspectscore=0 phishscore=0 impostorscore=0 bulkscore=0 malwarescore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508100057 Like on other platforms, if the OS does not support recovering the state left by the bootloader it needs access to MDSS_CORE, so that it can clear the MDSS configuration. Until now it seems no version of the bootloaders have done so, but e.g. the Particle Tachyon ships with a bootloader that does leave the display in a state that results in a series of iommu faults. So let's provide the reset, to allow the OS to clear that state. Signed-off-by: Bjorn Andersson Reviewed-by: Konrad Dybcio --- arch/arm64/boot/dts/qcom/sc7280.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qco= m/sc7280.dtsi index 64a2abd3010018e94eb50c534a509d6b4cf2473b..5eafcb84cd452ecc758922b6977= 4837e9f5a899a 100644 --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi @@ -4724,6 +4724,8 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>, =20 iommus =3D <&apps_smmu 0x900 0x402>; =20 + resets =3D <&dispcc DISP_CC_MDSS_CORE_BCR>; + #address-cells =3D <2>; #size-cells =3D <2>; ranges; --=20 2.49.0