From: "Pankaj Bansal" <pankaj.bansal@nxp.com>
To: Leif Lindholm <leif@nuviainc.com>,
Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>,
Michael D Kinney <michael.d.kinney@intel.com>,
devel@edk2.groups.io, Varun Sethi <V.Sethi@nxp.com>,
Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@arm.com>,
Jon Nettleton <jon@solid-run.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: [PATCH edk2-platforms v3 04/24] Silicon/Maxim: Fix bug in RtcWrite in Ds1307RtcLib
Date: Wed, 15 Apr 2020 17:43:22 +0530 [thread overview]
Message-ID: <20200415121342.9246-5-pankaj.bansal@oss.nxp.com> (raw)
In-Reply-To: <20200415121342.9246-1-pankaj.bansal@oss.nxp.com>
From: Pankaj Bansal <pankaj.bansal@nxp.com>
There was a bug in I2C DXE implementation, which caused the Ds1307 RTC
device to issue two operation for register write, while this is a single
operation task. refer page 12 (Slave Receiver Mode (Write Mode)) on
https://datasheets.maximintegrated.com/en/ds/DS1307.pdf
Modify ds1307 RtcWrite code accordingly.
Signed-off-by: Pankaj Bansal <pankaj.bansal@nxp.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
---
Notes:
- No change
Silicon/Maxim/Library/Ds1307RtcLib/Ds1307RtcLib.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/Silicon/Maxim/Library/Ds1307RtcLib/Ds1307RtcLib.c b/Silicon/Maxim/Library/Ds1307RtcLib/Ds1307RtcLib.c
index 88dc198ffec8..fd7a8696e405 100644
--- a/Silicon/Maxim/Library/Ds1307RtcLib/Ds1307RtcLib.c
+++ b/Silicon/Maxim/Library/Ds1307RtcLib/Ds1307RtcLib.c
@@ -5,7 +5,7 @@
EmbeddedPkg/Library/TemplateRealTimeClockLib/RealTimeClockLib.c
Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
- Copyright 2017 NXP
+ Copyright 2017, 2020 NXP
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -84,16 +84,15 @@ RtcWrite (
{
RTC_I2C_REQUEST Req;
EFI_STATUS Status;
+ UINT8 Buffer[2];
- Req.OperationCount = 2;
+ Req.OperationCount = 1;
+ Buffer[0] = RtcRegAddr;
+ Buffer[1] = Val;
Req.SetAddressOp.Flags = 0;
- Req.SetAddressOp.LengthInBytes = sizeof (RtcRegAddr);
- Req.SetAddressOp.Buffer = &RtcRegAddr;
-
- Req.GetSetDateTimeOp.Flags = 0;
- Req.GetSetDateTimeOp.LengthInBytes = sizeof (Val);
- Req.GetSetDateTimeOp.Buffer = &Val;
+ Req.SetAddressOp.LengthInBytes = sizeof (Buffer);
+ Req.SetAddressOp.Buffer = Buffer;
Status = mI2cMaster->StartRequest (mI2cMaster, FixedPcdGet8 (PcdI2cSlaveAddress),
(VOID *)&Req,
--
2.17.1
next prev parent reply other threads:[~2020-04-14 12:14 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-15 12:13 [PATCH edk2-platforms v3 00/24] Add PEI phase to LS1043ARDB Platform Pankaj Bansal
2020-04-15 12:13 ` [PATCH edk2-platforms v3 01/24] Silicon/NXP: Add I2c lib Pankaj Bansal
2020-04-22 16:38 ` Leif Lindholm
2020-04-24 6:53 ` Pankaj Bansal
2020-04-24 11:47 ` Leif Lindholm
2020-04-15 12:13 ` [PATCH edk2-platforms v3 02/24] Silicon/NXP: changes to use I2clib in i2cdxe Pankaj Bansal
2020-04-22 16:41 ` Leif Lindholm
2020-04-15 12:13 ` [PATCH edk2-platforms v3 03/24] Silicon/NXP/I2cDxe: Fix I2c Timeout with RTC Pankaj Bansal
2020-04-15 12:13 ` Pankaj Bansal [this message]
2020-04-15 12:13 ` [PATCH edk2-platforms v3 05/24] Silicon/Maxim: Add comments in Ds1307RtcLib Pankaj Bansal
2020-04-15 12:13 ` [PATCH edk2-platforms v3 06/24] NXP/LS1043aRdb: Move Soc specific components to soc files Pankaj Bansal
2020-04-15 12:13 ` [PATCH edk2-platforms v3 07/24] Silicon/NXP: remove print information from Soc lib Pankaj Bansal
2020-04-22 16:51 ` [PATCH edk2-platforms v3 07/24] Silicon/NXP: remove print information from Soc Leif Lindholm
2020-04-15 12:13 ` [PATCH edk2-platforms v3 08/24] Silicon/NXP: remove not needed components Pankaj Bansal
2020-04-15 12:13 ` [PATCH edk2-platforms v3 09/24] Silicon/NXP: Remove unnecessary PCDs Pankaj Bansal
2020-04-15 12:13 ` [PATCH edk2-platforms v3 10/24] Silicon/NXP: Move dsc file Pankaj Bansal
2020-04-15 12:13 ` [PATCH edk2-platforms v3 11/24] Platform/NXP: rename the ArmPlatformLib as per ArmPlatformPkg Pankaj Bansal
2020-04-15 12:13 ` [PATCH edk2-platforms v3 12/24] Silicon/NXP: Move RAM retrieval from SocLib Pankaj Bansal
2020-04-23 9:15 ` Leif Lindholm
2020-04-15 12:13 ` [PATCH edk2-platforms v3 13/24] Platform/NXP/LS1043aRdbPkg: Add Clock retrieval APIs Pankaj Bansal
2020-04-23 9:19 ` Leif Lindholm
2020-04-15 12:13 ` [PATCH edk2-platforms v3 14/24] Silicon/NXP: Use Clock retrieval PPI in modules Pankaj Bansal
2020-04-23 9:25 ` Leif Lindholm
2020-04-15 12:13 ` [PATCH edk2-platforms v3 15/24] Silicon: NXP: Remove direct calls to SwapMmio* APIs Pankaj Bansal
2020-04-23 9:27 ` Leif Lindholm
2020-04-23 10:11 ` Leif Lindholm
2020-04-15 12:13 ` [PATCH edk2-platforms v3 16/24] Silicon/NXP: Add Chassis2 Package Pankaj Bansal
2020-04-23 10:27 ` Leif Lindholm
2020-04-23 11:38 ` Pankaj Bansal
2020-04-23 11:57 ` Leif Lindholm
2020-04-23 12:02 ` Pankaj Bansal
2020-04-23 12:05 ` Leif Lindholm
2020-04-23 13:41 ` Pankaj Bansal
2020-04-23 14:18 ` Leif Lindholm
2020-04-23 14:45 ` Pankaj Bansal
2020-04-23 15:26 ` Leif Lindholm
2020-04-24 2:42 ` Pankaj Bansal
2020-04-24 15:51 ` Leif Lindholm
2020-04-28 17:46 ` [edk2-devel] " Ard Biesheuvel
2020-04-28 17:50 ` Leif Lindholm
2020-04-15 12:13 ` [PATCH edk2-platforms v3 17/24] Silicon/NXP/LS1043A: Use ChassisLib from Chassis2 Pkg Pankaj Bansal
2020-04-15 12:13 ` [PATCH edk2-platforms v3 18/24] Silicon/NXP/LS1043A: Move SocLib to Soc Package Pankaj Bansal
2020-04-15 12:13 ` [PATCH edk2-platforms v3 19/24] NXP/LS1043aRdbPkg/ArmPlatformLib: Remove extern SocInit Pankaj Bansal
2020-04-15 12:13 ` [PATCH edk2-platforms v3 20/24] NXP: LS1043aRdbPkg: Use ArmPlatformHelper.S from ArmPlatformPkg Pankaj Bansal
2020-04-23 10:28 ` Leif Lindholm
2020-04-15 12:13 ` [PATCH edk2-platforms v3 21/24] Platform/NXP: Use FV rules from ArmVirtPkg Pankaj Bansal
2020-04-23 10:31 ` Leif Lindholm
2020-04-24 6:24 ` Pankaj Bansal
2020-04-24 11:43 ` Leif Lindholm
2020-04-15 12:13 ` [PATCH edk2-platforms v3 22/24] Platform/NXP/LS1043aRdbPkg: Add VarStore Pankaj Bansal
2020-04-15 12:13 ` [PATCH edk2-platforms v3 23/24] Silicon/NXP: move MemoryInitPeiLib as per PEIM structures Pankaj Bansal
2020-04-15 12:13 ` [PATCH edk2-platforms v3 24/24] Platform/NXP/LS1043aRdbPkg: Add PEI Phase Pankaj Bansal
2020-04-23 10:33 ` Leif Lindholm
2020-04-22 10:46 ` [PATCH edk2-platforms v3 00/24] Add PEI phase to LS1043ARDB Platform Leif Lindholm
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