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Message-ID: <540f83f7d88b80441c9fa3d771dd7b000b0710a4.1716802450.git.michal.simek@amd.com>
Date: Mon, 27 May 2024 11:34:13 +0200
From: Michal Simek <michal.simek@....com>
To: <linux-kernel@...r.kernel.org>, <monstr@...str.eu>,
<michal.simek@...inx.com>, <git@...inx.com>
CC: Tejas Bhumkar <tejas.arvind.bhumkar@....com>, Conor Dooley
<conor+dt@...nel.org>, Krzysztof Kozlowski
<krzysztof.kozlowski+dt@...aro.org>, Rob Herring <robh@...nel.org>, "open
list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>, "moderated list:ARM/ZYNQ ARCHITECTURE"
<linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH 07/12] arm64: zynqmp: Disable Tri-state for SDIO
From: Tejas Bhumkar <tejas.arvind.bhumkar@....com>
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@....com>
Signed-off-by: Michal Simek <michal.simek@....com>
---
arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso | 1 +
arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso b/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso
index d7535a77b45e..a09909a6f885 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso
+++ b/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso
@@ -321,6 +321,7 @@ conf {
slew-rate = <SLEW_RATE_SLOW>;
power-source = <IO_STANDARD_LVCMOS18>;
bias-disable;
+ output-enable;
};
conf-cd {
diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso b/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso
index a7b8fffad499..b3b8875f8f7a 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso
+++ b/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso
@@ -305,6 +305,7 @@ conf {
slew-rate = <SLEW_RATE_SLOW>;
power-source = <IO_STANDARD_LVCMOS18>;
bias-disable;
+ output-enable;
};
conf-cd {
--
2.40.1
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