This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

  • Resolved

[FAQ] CCS/TDA4VM: How to enable RTC on Jacinto TDA4x EVM?

Mastermind 20650 points
Keerthy J

Replies: 1

Views: 79

Part Number: TDA4VM

Tool/software: Code Composer Studio

MCP79410-I/SN is connected I2C0 interface of J721E SoC. How to enable the same?

Mastermind 20650 points
Keerthy J
  • Mastermind 20650 points
    Keerthy J

    Hi,

    Following changes are needed:

    1. CONFIG enabling. The driver supporting MCP79410 RTC is drivers/rtc/rtc-ds1307.c.
      CONFIG_RTC_DRV_DS1307 needs to be enabled.

      Add CONFIG_RTC_DRV_DS1307=y to arch/arm64/configs/tisdk_j7-evm_defconfig under linux folder.

    2. DTS changes as below:

      diff --git a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
index 6788a3611..9d642eb7a 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
@@ -593,6 +593,11 @@
                #gpio-cells = <2>;
        };

+       rtc@67 {
+               compatible = "microchip,mcp7941x";
+               reg = <0x67>;
+       };
+
        exp2: gpio@22 {
                compatible = "ti,tca6424";
                reg = <0x22>;


      Best Regards,
      Keerthy

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.


All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.

Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Terms of use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of use of this site. TI, its suppliers and providers of content reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.

TI worldwide | Contact us | myTI login | Corporate citizenship

TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs and
embedded processors, along with software, tools and the industry’s largest sales/support staff.

© Copyright 1995-2021 Texas Instruments Incorporated. All rights reserved.
Trademarks | Privacy policy | Terms of use