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([2a01:e0a:106d:1080:cbfe:649:7f17:8b95]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4852967d9f8sm1234355e9.32.2026.03.06.02.11.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 06 Mar 2026 02:11:09 -0800 (PST) Message-ID: Date: Fri, 6 Mar 2026 11:11:09 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Neil Armstrong Subject: Re: [PATCH] arm64: dts: amlogic: Fix GIC register ranges for Amlogic T7 To: Ronald Claveau , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260305-fix-amlt7-gic-dts-v1-1-5944415c74bf@aliel.fr> Content-Language: en-US, fr Autocrypt: addr=neil.armstrong@linaro.org; keydata= xsBNBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB AAHNKk5laWwgQXJtc3Ryb25nIDxuZWlsLmFybXN0cm9uZ0BsaW5hcm8ub3JnPsLAkQQTAQoA OwIbIwULCQgHAwUVCgkICwUWAgMBAAIeAQIXgBYhBInsPQWERiF0UPIoSBaat7Gkz/iuBQJk Q5wSAhkBAAoJEBaat7Gkz/iuyhMIANiD94qDtUTJRfEW6GwXmtKWwl/mvqQtaTtZID2dos04 YqBbshiJbejgVJjy+HODcNUIKBB3PSLaln4ltdsV73SBcwUNdzebfKspAQunCM22Mn6FBIxQ GizsMLcP/0FX4en9NaKGfK6ZdKK6kN1GR9YffMJd2P08EO8mHowmSRe/ExAODhAs9W7XXExw UNCY4pVJyRPpEhv373vvff60bHxc1k/FF9WaPscMt7hlkbFLUs85kHtQAmr8pV5Hy9ezsSRa GzJmiVclkPc2BY592IGBXRDQ38urXeM4nfhhvqA50b/nAEXc6FzqgXqDkEIwR66/Gbp0t3+r yQzpKRyQif3OwE0ETVkGzwEIALyKDN/OGURaHBVzwjgYq+ZtifvekdrSNl8TIDH8g1xicBYp QTbPn6bbSZbdvfeQPNCcD4/EhXZuhQXMcoJsQQQnO4vwVULmPGgtGf8PVc7dxKOeta+qUh6+ SRh3vIcAUFHDT3f/Zdspz+e2E0hPV2hiSvICLk11qO6cyJE13zeNFoeY3ggrKY+IzbFomIZY 4yG6xI99NIPEVE9lNBXBKIlewIyVlkOaYvJWSV+p5gdJXOvScNN1epm5YHmf9aE2ZjnqZGoM Mtsyw18YoX9BqMFInxqYQQ3j/HpVgTSvmo5ea5qQDDUaCsaTf8UeDcwYOtgI8iL4oHcsGtUX oUk33HEAEQEAAcLAXwQYAQIACQUCTVkGzwIbDAAKCRAWmrexpM/4rrXiB/sGbkQ6itMrAIfn M7IbRuiSZS1unlySUVYu3SD6YBYnNi3G5EpbwfBNuT3H8//rVvtOFK4OD8cRYkxXRQmTvqa3 3eDIHu/zr1HMKErm+2SD6PO9umRef8V82o2oaCLvf4WeIssFjwB0b6a12opuRP7yo3E3gTCS KmbUuLv1CtxKQF+fUV1cVaTPMyT25Od+RC1K+iOR0F54oUJvJeq7fUzbn/KdlhA8XPGzwGRy 4zcsPWvwnXgfe5tk680fEKZVwOZKIEuJC3v+/yZpQzDvGYJvbyix0lHnrCzq43WefRHI5XTT QbM0WUIBIcGmq38+OgUsMYu4NzLu7uZFAcmp6h8g Organization: Linaro In-Reply-To: <20260305-fix-amlt7-gic-dts-v1-1-5944415c74bf@aliel.fr> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260306_021112_665994_A07C59E3 X-CRM114-Status: GOOD ( 17.01 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Neil Armstrong Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org On 3/5/26 23:11, Ronald Claveau wrote: > This patch aims to fix the GIC register ranges for Amlogic T7 SoC family. > > - Context > Kernel log shows a warning about GIC > [ 0.000000] GIC: GICv2 detected, but range too small and irqchip.gicv2_force_probe not set > > Using cat /proc/interrupts command shows GIC as GIC-0 > > Adding some peripherals sometimes causes hangs on interrupts. > > - According to the GIC-400 ARM doc, the memory map is like: > 0x1000-0x1FFF Distributor > 0x2000-0x3FFF CPU interfaces > 0x4000-0x5FFF Virtual interface control block > 0x6000-0x7FFF Virtual CPU interfaces > > - Identify GIC model from distributor register > > Offset | Name | Type | Reset > 0x008 | GICD_IIDR | RO | 0x0200143B > > kvim4# md.l 0xFFF01008 1 > fff01008: 0200143b > > - Identify CPU interface from CPU interface register > > Offset | Name | Type | Reset > 0x00FC | GICC_IIDR | RO | 0x0202143B > > kvim4# md.l 0xFFF020FC 1 > fff020fc: 0202143b > > - Virtual interface control register check > > Offset | Name | Type | Reset > 0x004 | GICH_VTR | RO | 0x90000003 > > kvim4# md.l 0xFFF04004 1 > fff04004: 90000003 > > - Virtual CPU interfaces check > > Offset | Name | Type | Reset > 0x00FC | GICV_IIDR | RO | 0x0202143B > > kvim4# md.l 0xFFF060FC 1 > fff060fc: 0202143b > > - After this patch there is no warning anymore. > GICv2 is correctly identified. > > [ 0.000000] GIC: Using split EOI/Deactivate mode > > Using cat /proc/interrupts command shows GIC as GICv2 > > Signed-off-by: Ronald Claveau > --- > arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi > index 6510068bcff92..d523cbc0ed22a 100644 > --- a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi > +++ b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi > @@ -213,7 +213,9 @@ gic: interrupt-controller@fff01000 { > #address-cells = <0>; > interrupt-controller; > reg = <0x0 0xfff01000 0 0x1000>, > - <0x0 0xfff02000 0 0x0100>; > + <0x0 0xfff02000 0 0x2000>, > + <0x0 0xfff04000 0 0x2000>, > + <0x0 0xfff06000 0 0x2000>; > interrupts = ; > }; > > > --- > base-commit: c025f6cf4209e1542ec2afebe49f42bbaf1a5c7b > change-id: 20260303-fix-amlt7-gic-dts-7dcc93e13612 > > Best regards, Reviewed-by: Neil Armstrong Thanks, Neil _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic