[1/1] ARM: dts: stm32: Configure qspi's mdma transfer to block for stm32mp151

From: patrice.chotard
Date: Mon Apr 26 2021 - 06:40:48 EST


From: Patrice Chotard <patrice.chotard@xxxxxxxxxxx>

Configure qspi's mdma from buffer transfer (max 128 bytes) to
block transfer (max 64K bytes).

mtd_speedtest shows that write throughtput increases :
- from 734 to 782 KiB/s (~6.5%) with s25fl512s SPI-NOR.
- from 4848 to 5319 KiB/s (~9.72%) with Micron SPI-NAND.

Signed-off-by: Christophe Kerello <christophe.kerello@xxxxxx>
Signed-off-by: Patrice Chotard <patrice.chotard@xxxxxxxxxxx>
---
arch/arm/boot/dts/stm32mp151.dtsi | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/stm32mp151.dtsi b/arch/arm/boot/dts/stm32mp151.dtsi
index 4b8031782555..cb326c1e12bc 100644
--- a/arch/arm/boot/dts/stm32mp151.dtsi
+++ b/arch/arm/boot/dts/stm32mp151.dtsi
@@ -1358,8 +1358,8 @@
reg = <0x58003000 0x1000>, <0x70000000 0x10000000>;
reg-names = "qspi", "qspi_mm";
interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
- dmas = <&mdma1 22 0x2 0x100002 0x0 0x0>,
- <&mdma1 22 0x2 0x100008 0x0 0x0>;
+ dmas = <&mdma1 22 0x2 0x10100002 0x0 0x0>,
+ <&mdma1 22 0x2 0x10100008 0x0 0x0>;
dma-names = "tx", "rx";
clocks = <&rcc QSPI_K>;
resets = <&rcc QSPI_R>;
--
2.17.1