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Fri, 13 Mar 2026 01:46:37 -0700 (PDT) From: Bo Gan To: linux-riscv@lists.infradead.org, samuel.holland@sifive.com, david@redhat.com, palmer@dabbelt.com, pjw@kernel.org, gaohan@iscas.ac.cn, me@ziyao.cc Cc: lizhi2@eswincomputing.com, hal.feng@starfivetech.com, marcel@ziswiler.com, conor@kernel.org, kernel@esmil.dk, devicetree@vger.kernel.org Subject: [RFC PATCH 6/6] [TESTING-ONLY] riscv: dts: eswin: eic7700: activate XPbmtUC Date: Fri, 13 Mar 2026 01:44:07 -0700 Message-Id: <20260313084407.29669-7-ganboing@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260313084407.29669-1-ganboing@gmail.com> References: <20260313084407.29669-1-ganboing@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Set riscv,xpbmt-uncache-bit to 38 for testing only. (Make sure your firmware remaps it as the following) [0x0, 0x20000000) Core Internal [0x20000000, 0x40000000) Core Internal (Die 1) [0x40000000, 0x60000000) Low MMIO [0x60000000, 0x80000000) Low MMIO (Die 1) [0x80000000, 0x10_80000000) Cached Mem [0x20_00000000, 0x30_00000000) Cached Mem (Die 1) [0x80_00000000, 0xa0_00000000) High MMIO [0xa0_00000000, 0xc0_00000000) High MMIO (Die 1) [0xc0_00000000, 0xd0_00000000) Uncached Mem <----------. [0xe0_00000000, 0xf0_00000000) Uncached Mem (Die 1) <--+--. with firmware/hypervisor re-mapping: | | ------------------------------------ | | [0x100_80000000, 0x110_80000000) Mem UC+ ----------------' | [0x120_00000000, 0x130_00000000) Mem UC+ (Die 1) -----------' Signed-off-by: Bo Gan --- arch/riscv/boot/dts/eswin/eic7700.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/boot/dts/eswin/eic7700.dtsi b/arch/riscv/boot/dts/eswin/eic7700.dtsi index f16ec76fb130c..5c413439daf0a 100644 --- a/arch/riscv/boot/dts/eswin/eic7700.dtsi +++ b/arch/riscv/boot/dts/eswin/eic7700.dtsi @@ -10,6 +10,7 @@ / { #address-cells = <2>; #size-cells = <2>; + riscv,xpbmt-uncache-bit = <38>; cpus { #address-cells = <1>; -- 2.34.1