The SPI NOR is a bit further away from the SoC on DHCOR than on DHCOM,
which causes additional signal delay. At 108 MHz, this delay triggers
a sporadic issue where the first bit of RX data is not received by the
QSPI controller.
There are two options of addressing this problem, either by using the
DLYB block to compensate the extra delay, or by reducing the QSPI bus
clock frequency. The former requires calibration and that is overly
complex for SPL, so opt for the second option. This incurs 20ms delay
during boot, when SPL loads U-Boot to DRAM.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
DT alignment with Linux 5.7-rc2, including the kernel commits
431c89e6f323 ARM: dts: stm32: use correct vqmmc regu for eMMC on stm32mp1 ED1/EV1 boards
79e965053872 ARM: dts: stm32: add disable-wp property for SD-card on STM32MP1 boards
877db62ea516 ARM: dts: stm32: add cd-gpios properties for SD-cards on STM32MP1 boards
7519e95ba5f8 ARM: dts: stm32: Do clean up in stmpic nodes on stm32mp15 boards
f68e2dbc591a ARM: dts: stm32: Rename stmfx joystick pins on stm32mp157c-ev1
d6210da4f8bf ARM: dts: stm32: add cpu clock-frequency property on stm32mp15x
b65b6fc56925 ARM: dts: stm32: add wakeup-source in all I2C nodes of stm32mp157c
1c1cf5996cfb ARM: dts: stm32: add i2c4 sleep pinctrl on stm32mp157c-ed1
bef15fc0fad9 ARM: dts: stm32: add i2c2/i2c5 sleep pinctrl on stm32mp157c-ev1
b7fc0a87b9ac ARM: dts: stm32: add i2c4 sleep pinctrl on stm32mp15xx-dkx
a5e557655285 ARM: dts: stm32: set i2c4 bus freq to 400KHz on stm32mp15 DK boards
8bc631b650a6 ARM: dts: stm32: set i2c4 bus freq to 400KHz on stm32mp157c-ed1
fccd6a577bb3 ARM: dts: stm32: Correct stmfx node name on stm32mp157c-ev1 board
cc775a83db65 ARM: dts: stm32: add resets property on all DMA nodes on stm32mp151
c5fae093511b ARM: dts: stm32: enable USB OTG Dual Role on stm32mp157c-ev1
9879e2165758 ARM: dts: stm32: add USB OTG pinctrl to stm32mp15
82ac8a81f985 ARM: dts: stm32: add USB OTG full support on stm32mp151
8714b26e2863 ARM: dts: stm32: remove useless properties in stm32mp157a-avenger96 stmpic node
a7959919709e ARM: dts: stm32: Add UART8 pins A pinmux entry on stm32mp1
4d7c53a684da ARM: dts: stm32: Add USART3 pins A pinmux entry on stm32mp1
80ab128332ee ARM: dts: stm32: Add SAI2A pins B pinmux entry on stm32mp1
ab7f98c0c546 ARM: dts: stm32: Add Ethernet0 RMII pins A pinmux entry on stm32mp1
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
The commit 132e5b6898 ("ARM: dts: stm32: Split AV96 into DHCOR SoM
and AV96 board") was not applied correctly and in full, and omitted
an important split of the SoM into 3V3 and 1V8 options. The Avenger96
board is based on the 1V8 IO option of the DHCOR SoM, however this is
an optional modification of the 3V3 IO DHCOR SoM with extra on-SoM
regulator to cater for the 96boards 1V8 IO requirements.
Reinstate the split between the 1V8 and 3V3 IO variants.
Fixes: 132e5b6898 ("ARM: dts: stm32: Split AV96 into DHCOR SoM and AV96 board")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
2020-05-14 09:02:12 +02:00
Renamed from arch/arm/dts/stm32mp15xx-dhcor.dtsi (Browse further)
