linux-kernel - [PATCH v4 2/2] soc: qcom: socinfo: Add reserve field to support future extension

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Message-ID: <20251104130906.167666-2-mukesh.ojha@oss.qualcomm.com>
Date: Tue,  4 Nov 2025 18:39:06 +0530
From: Mukesh Ojha <mukesh.ojha@....qualcomm.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mukesh Ojha <mukesh.ojha@....qualcomm.com>
Subject: [PATCH v4 2/2] soc: qcom: socinfo: Add reserve field to support future extension

Some of the new field added to socinfo structure with version 21, 22
and 23 which is only used by boot firmware and it is of no use for
Linux.Add reserve field in socinfo so that the structure remain
updated and prepared if we get any new field in future which could
be used by Linux. While at it, also updates switch case for backward
compatibility if the SoC runs with boot firmware which has these
new version added.

Signed-off-by: Mukesh Ojha <mukesh.ojha@....qualcomm.com>
---
Changes in v4:
- This is new change combining multiple soc-info field
  update with reserve field introduction.


 drivers/soc/qcom/socinfo.c       | 3 +++
 include/linux/soc/qcom/socinfo.h | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/drivers/soc/qcom/socinfo.c b/drivers/soc/qcom/socinfo.c
index 77d0b8062208..c5352e1fead2 100644
--- a/drivers/soc/qcom/socinfo.c
+++ b/drivers/soc/qcom/socinfo.c
@@ -657,6 +657,9 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 			   &qcom_socinfo->info.fmt);
 
 	switch (qcom_socinfo->info.fmt) {
+	case SOCINFO_VERSION(0, 23):
+	case SOCINFO_VERSION(0, 22):
+	case SOCINFO_VERSION(0, 21):
 	case SOCINFO_VERSION(0, 20):
 		qcom_socinfo->info.raw_package_type = __le32_to_cpu(info->raw_package_type);
 		debugfs_create_u32("raw_package_type", 0444, qcom_socinfo->dbg_root,
diff --git a/include/linux/soc/qcom/socinfo.h b/include/linux/soc/qcom/socinfo.h
index c4dae173cc30..ba823a0013c5 100644
--- a/include/linux/soc/qcom/socinfo.h
+++ b/include/linux/soc/qcom/socinfo.h
@@ -84,6 +84,8 @@ struct socinfo {
 	__le32 boot_core;
 	/* Version 20 */
 	__le32 raw_package_type;
+	/* Version 21, 22, 23 */
+	__le32 reserve1[4];
 };
 
 /* Internal feature codes */
-- 
2.50.1