From mboxrd@z Thu Jan 1 00:00:00 1970 From: Atish Patra Subject: [PATCH v2 1/4] dt-bindings: Correct RISC-V's timebase-frequency Date: Thu, 13 Dec 2018 15:14:26 -0800 Message-ID: <1544742869-19980-2-git-send-email-atish.patra@wdc.com> References: <1544742869-19980-1-git-send-email-atish.patra@wdc.com> Return-path: In-Reply-To: <1544742869-19980-1-git-send-email-atish.patra@wdc.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org Cc: Palmer Dabbelt , Christoph Hellwig , Atish Patra , Albert Ou , Daniel Lezcano , devicetree@vger.kernel.org, Dmitriy Cherkasov , linux-riscv@lists.infradead.org, Mark Rutland , Rob Herring , Thomas Gleixner , Anup Patel , Damien Le Moal , Christoph Hellwig List-Id: devicetree@vger.kernel.org From: Palmer Dabbelt In RISC-V systems, timebase-frequency is per cpu instead of one instance for entire SOC as there is a individual timer per each CPU. Fix the DT binding accordingly. Signed-off-by: Palmer Dabbelt Signed-off-by: Christoph Hellwig [Atish: Update the commit text] Signed-off-by: Atish Patra Reviewed-by: Rob Herring --- Documentation/devicetree/bindings/riscv/cpus.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/riscv/cpus.txt b/Documentation/devicetree/bindings/riscv/cpus.txt index adf7b7af..b0b038d6 100644 --- a/Documentation/devicetree/bindings/riscv/cpus.txt +++ b/Documentation/devicetree/bindings/riscv/cpus.txt @@ -93,9 +93,9 @@ Linux is allowed to run on. cpus { #address-cells = <1>; #size-cells = <0>; - timebase-frequency = <1000000>; cpu@0 { clock-frequency = <1600000000>; + timebase-frequency = <1000000>; compatible = "sifive,rocket0", "riscv"; device_type = "cpu"; i-cache-block-size = <64>; @@ -113,6 +113,7 @@ Linux is allowed to run on. }; cpu@1 { clock-frequency = <1600000000>; + timebase-frequency = <1000000>; compatible = "sifive,rocket0", "riscv"; d-cache-block-size = <64>; d-cache-sets = <64>; @@ -145,6 +146,7 @@ Example: Spike ISA Simulator with 1 Hart This device tree matches the Spike ISA golden model as run with `spike -p1`. cpus { + timebase-frequency = <1000000>; cpu@0 { device_type = "cpu"; reg = <0x00000000>; -- 2.7.4