From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lukasz Luba Subject: [PATCH v3 3/4] ARM: dts: exynos: map 0x10000 SFR instead of 0x100 in DMC Exynos5422 Date: Wed, 2 Oct 2019 08:04:54 +0200 Message-ID: <20191002060455.3834-4-l.luba@partner.samsung.com> References: <20191002060455.3834-1-l.luba@partner.samsung.com> Content-Type: text/plain; charset="utf-8" Return-path: In-Reply-To: <20191002060455.3834-1-l.luba@partner.samsung.com> Sender: linux-kernel-owner@vger.kernel.org To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: b.zolnierkie@samsung.com, krzk@kernel.org, kgene@kernel.org, mark.rutland@arm.com, cw00.choi@samsung.com, kyungmin.park@samsung.com, m.szyprowski@samsung.com, s.nawrocki@samsung.com, myungjoo.ham@samsung.com, robh+dt@kernel.org, willy.mh.wolff.ml@gmail.com, Lukasz Luba List-Id: devicetree@vger.kernel.org There is a need to access registers at address offset near 0x10000. These registers are private DMC performance counters, which might be used as interrupt trigger when overflow. Potential usage is to skip polling in devfreq framework and switch to interrupt managed bandwidth control. Signed-off-by: Lukasz Luba --- arch/arm/boot/dts/exynos5420.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi index 98f6c71f57d8..c829bbdc5711 100644 --- a/arch/arm/boot/dts/exynos5420.dtsi +++ b/arch/arm/boot/dts/exynos5420.dtsi @@ -239,7 +239,7 @@ dmc: memory-controller@10c20000 { compatible = "samsung,exynos5422-dmc"; - reg = <0x10c20000 0x100>, <0x10c30000 0x100>; + reg = <0x10c20000 0x10000>, <0x10c30000 0x10000>; interrupt-parent = <&combiner>; interrupts = <16 0>, <16 1>; interrupt-names = "drex_0", "drex_1"; -- 2.17.1