From: Andrew Jeffery <andrew@aj.id.au>
To: linux-aspeed@lists.ozlabs.org
Cc: devicetree@vger.kernel.org, openbmc@lists.ozlabs.org,
linux-kernel@vger.kernel.org, robh+dt@kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: dts: tacoma: Add phase corrections for eMMC
Date: Fri, 25 Jun 2021 15:40:17 +0930 [thread overview]
Message-ID: <20210625061017.1149942-1-andrew@aj.id.au> (raw)
The degree values were reversed out from the magic tap values of 7 (in)
and 15 + inversion (out) initially suggested by Aspeed.
With the patch tacoma survives several gigabytes of reads and writes
using dd while without it locks up randomly during the boot process.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
---
arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts b/arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts
index c1478d2db602..670080bb80eb 100644
--- a/arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts
@@ -189,6 +189,7 @@ &emmc_controller {
&emmc {
status = "okay";
+ clk-phase-mmc-hs200 = <36>, <270>;
};
&fsim0 {
--
2.30.2
next reply other threads:[~2021-06-25 6:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-25 6:10 Andrew Jeffery [this message]
2021-07-01 3:40 ` [PATCH] ARM: dts: tacoma: Add phase corrections for eMMC Joel Stanley
2021-07-01 5:08 ` Andrew Jeffery
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