[RESEND PATCH v2 2/2] ARM: imx6: change default burst size for USB
From: Peter Chen <hidden>
Date: 2015-09-30 02:17:17
Subsystem:
the rest · Maintainer:
Linus Torvalds
It can improve the USB performance when choosing larger burst size at some systems (bus size is larger), there is no side effect if this burst size is larger than bus size. Signed-off-by: Peter Chen <redacted> --- Changes for v2: - Applies changes for imx6ul arch/arm/boot/dts/imx6qdl.dtsi | 8 ++++++++ arch/arm/boot/dts/imx6sl.dtsi | 6 ++++++ arch/arm/boot/dts/imx6sx.dtsi | 6 ++++++ arch/arm/boot/dts/imx6ul.dtsi | 4 ++++ 4 files changed, 24 insertions(+)
diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index 3d04a17..92c5cc0 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi@@ -907,6 +907,8 @@ fsl,usbphy = <&usbphy1>; fsl,usbmisc = <&usbmisc 0>; ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; + rx-burst-size-dword = <0x10>; status = "disabled"; };
@@ -919,6 +921,8 @@ fsl,usbmisc = <&usbmisc 1>; dr_mode = "host"; ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; + rx-burst-size-dword = <0x10>; status = "disabled"; };
@@ -930,6 +934,8 @@ fsl,usbmisc = <&usbmisc 2>; dr_mode = "host"; ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; + rx-burst-size-dword = <0x10>; status = "disabled"; };
@@ -941,6 +947,8 @@ fsl,usbmisc = <&usbmisc 3>; dr_mode = "host"; ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; + rx-burst-size-dword = <0x10>; status = "disabled"; };
diff --git a/arch/arm/boot/dts/imx6sl.dtsi b/arch/arm/boot/dts/imx6sl.dtsi
index 057b1d4..2c0faeb 100644
--- a/arch/arm/boot/dts/imx6sl.dtsi
+++ b/arch/arm/boot/dts/imx6sl.dtsi@@ -690,6 +690,8 @@ fsl,usbphy = <&usbphy1>; fsl,usbmisc = <&usbmisc 0>; ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; + rx-burst-size-dword = <0x10>; status = "disabled"; };
@@ -701,6 +703,8 @@ fsl,usbphy = <&usbphy2>; fsl,usbmisc = <&usbmisc 1>; ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; + rx-burst-size-dword = <0x10>; status = "disabled"; };
@@ -712,6 +716,8 @@ fsl,usbmisc = <&usbmisc 2>; dr_mode = "host"; ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; + rx-burst-size-dword = <0x10>; status = "disabled"; };
diff --git a/arch/arm/boot/dts/imx6sx.dtsi b/arch/arm/boot/dts/imx6sx.dtsi
index 70a7c4f..01191c0 100644
--- a/arch/arm/boot/dts/imx6sx.dtsi
+++ b/arch/arm/boot/dts/imx6sx.dtsi@@ -784,6 +784,8 @@ fsl,usbmisc = <&usbmisc 0>; fsl,anatop = <&anatop>; ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; + rx-burst-size-dword = <0x10>; status = "disabled"; };
@@ -795,6 +797,8 @@ fsl,usbphy = <&usbphy2>; fsl,usbmisc = <&usbmisc 1>; ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; + rx-burst-size-dword = <0x10>; status = "disabled"; };
@@ -808,6 +812,8 @@ fsl,anatop = <&anatop>; dr_mode = "host"; ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; + rx-burst-size-dword = <0x10>; status = "disabled"; };
diff --git a/arch/arm/boot/dts/imx6ul.dtsi b/arch/arm/boot/dts/imx6ul.dtsi
index 654009f..28dcd68 100644
--- a/arch/arm/boot/dts/imx6ul.dtsi
+++ b/arch/arm/boot/dts/imx6ul.dtsi@@ -536,6 +536,8 @@ fsl,usbmisc = <&usbmisc 0>; fsl,anatop = <&anatop>; ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; + rx-burst-size-dword = <0x10>; status = "disabled"; };
@@ -547,6 +549,8 @@ fsl,usbphy = <&usbphy2>; fsl,usbmisc = <&usbmisc 1>; ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; + rx-burst-size-dword = <0x10>; status = "disabled"; };
--
1.9.1