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[85.76.98.107]) by smtp.gmail.com with ESMTPSA id r201sm6230659lff.268.2020.12.31.04.56.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 31 Dec 2020 04:56:44 -0800 (PST) From: =?utf-8?b?SmFyaSBIw6Rtw6Rsw6RpbmVu?= To: Shawn Lin , Heiko Stuebner Cc: =?utf-8?b?SmFyaSBIw6Rtw6Rsw6RpbmVu?= , linux-pci@vger.kernel.org, linux-rockchip@lists.infradead.org, Lorenzo Pieralisi , Rob Herring , Bjorn Helgaas Subject: [RFC PATCH 3/3] arm64: dts: rockchip: use bus-scan-delay-ms workaround with RockPro64 PCIe Date: Thu, 31 Dec 2020 14:52:14 +0200 Message-Id: <20201231125214.25733-4-nuumiofi@gmail.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201231125214.25733-1-nuumiofi@gmail.com> References: <20201231125214.25733-1-nuumiofi@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Add delay before RockPro64 PCIe bus scan as a workaround for some devices causing a crash like many LSI SAS controller based RAID controllers and host bus adapters. As a side effect this slows down system startup by the amount of delay even with devices that don't need the delay to work. Signed-off-by: Jari Hämäläinen --- arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi index 6e553ff47534..256c357c069e 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi @@ -546,6 +546,7 @@ &pcie0 { num-lanes = <4>; pinctrl-names = "default"; pinctrl-0 = <&pcie_perst>; + rockchip,bus-scan-delay-ms = <1100>; vpcie12v-supply = <&vcc12v_dcin>; vpcie3v3-supply = <&vcc3v3_pcie>; status = "okay";