Commit a082e297 authored May 27, 2024 by Tejas Bhumkar Committed by Michal Simek Jun 17, 2024

arm64: zynqmp: Disable Tri-state for SDIO



Since the zynqmp pinctrl driver now includes support for the
tri-state registers, ensure that the pins needing output-enable
are correctly configured for SOMs.

Currently, there is an issue with the detection of the MMC for
the SOM kv260, resulting in the following error:
ZynqMP> mmc dev 1
Card did not respond to voltage select! : -110

To address this problem, configure the SDIO pins for output-enable
to enable MMC detection.

Signed-off-by: Tejas Bhumkar <tejas.arvind.bhumkar@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/540f83f7d88b80441c9fa3d771dd7b000b0710a4.1716802450.git.michal.simek@amd.com

parent a520fcce

arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso

+1 −0

Original line number	Diff line number	Diff line
		@@ -321,6 +321,7 @@ conf {
		slew-rate = <SLEW_RATE_SLOW>;
		power-source = <IO_STANDARD_LVCMOS18>;
		bias-disable;
		output-enable;
		};

		conf-cd {

arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso

+1 −0

Original line number	Diff line number	Diff line
		@@ -305,6 +305,7 @@ conf {
		slew-rate = <SLEW_RATE_SLOW>;
		power-source = <IO_STANDARD_LVCMOS18>;
		bias-disable;
		output-enable;
		};

		conf-cd {