From: Alexander Kochetkov <al.kochet@gmail.com>
To: Heiko Stuebner <heiko@sntech.de>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Russell King <linux@armlinux.org.uk>,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: Alexander Kochetkov <al.kochet@gmail.com>
Subject: [PATCH] ARM: dts: rockchip: setup DMA-channels for mmc0 and emmc for rk3188
Date: Tue, 21 Mar 2017 18:13:47 +0300 [thread overview]
Message-ID: <1490109227-4006-1-git-send-email-al.kochet@gmail.com> (raw)
This commit enable DMA-based transfers for SD/eMMC card adapters
and reduce number of interrupts produced by SD-card/eMMC-card
adapters.
Sometimes interrupts from SD-card/eMMC-card adapters running in
PIO mode blocks execution of hrtimers and I2S DMA callbacks for
a long periods (100 ms or more).
Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
---
arch/arm/boot/dts/rk3188.dtsi | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/rk3188.dtsi b/arch/arm/boot/dts/rk3188.dtsi
index 44da3d42..de786f8 100644
--- a/arch/arm/boot/dts/rk3188.dtsi
+++ b/arch/arm/boot/dts/rk3188.dtsi
@@ -638,3 +638,13 @@
&wdt {
compatible = "rockchip,rk3188-wdt", "snps,dw-wdt";
};
+
+&mmc0 {
+ dmas = <&dmac2 1>;
+ dma-names = "rx-tx";
+};
+
+&emmc {
+ dmas = <&dmac2 4>;
+ dma-names = "rx-tx";
+};
--
1.7.9.5
WARNING: multiple messages have this Message-ID (diff)
From: al.kochet@gmail.com (Alexander Kochetkov)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: dts: rockchip: setup DMA-channels for mmc0 and emmc for rk3188
Date: Tue, 21 Mar 2017 18:13:47 +0300 [thread overview]
Message-ID: <1490109227-4006-1-git-send-email-al.kochet@gmail.com> (raw)
This commit enable DMA-based transfers for SD/eMMC card adapters
and reduce number of interrupts produced by SD-card/eMMC-card
adapters.
Sometimes interrupts from SD-card/eMMC-card adapters running in
PIO mode blocks execution of hrtimers and I2S DMA callbacks for
a long periods (100 ms or more).
Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
---
arch/arm/boot/dts/rk3188.dtsi | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/rk3188.dtsi b/arch/arm/boot/dts/rk3188.dtsi
index 44da3d42..de786f8 100644
--- a/arch/arm/boot/dts/rk3188.dtsi
+++ b/arch/arm/boot/dts/rk3188.dtsi
@@ -638,3 +638,13 @@
&wdt {
compatible = "rockchip,rk3188-wdt", "snps,dw-wdt";
};
+
+&mmc0 {
+ dmas = <&dmac2 1>;
+ dma-names = "rx-tx";
+};
+
+&emmc {
+ dmas = <&dmac2 4>;
+ dma-names = "rx-tx";
+};
--
1.7.9.5
next reply other threads:[~2017-03-21 15:21 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-21 15:13 Alexander Kochetkov [this message]
2017-03-21 15:13 ` [PATCH] ARM: dts: rockchip: setup DMA-channels for mmc0 and emmc for rk3188 Alexander Kochetkov
2017-03-22 15:54 ` Heiko Stuebner
2017-03-22 15:54 ` Heiko Stuebner
2017-03-22 15:54 ` Heiko Stuebner
2017-03-22 16:20 ` Alexander Kochetkov
2017-03-22 16:20 ` Alexander Kochetkov
2017-03-22 16:20 ` Alexander Kochetkov
2017-03-22 16:35 ` Heiko Stuebner
2017-03-22 16:35 ` Heiko Stuebner
2017-03-22 16:35 ` Heiko Stuebner
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