Commit c90b2c4f authored by Patrice Chotard's avatar Patrice Chotard Committed by Alexandre Torgue
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ARM: dts: stm32: Configure qspi's mdma transfer to block for stm32mp151 



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: default avatarChristophe Kerello <christophe.kerello@foss.st.com>
Signed-off-by: default avatarPatrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: default avatarAlexandre Torgue <alexandre.torgue@foss.st.com>
parent 4b5fadef

arch/arm/boot/dts/stm32mp151.dtsi

+2 −2
Original line number Diff line number Diff line
@@ -1369,8 +1369,8 @@ 
			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>;