From patchwork Tue Mar 4 12:52:56 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zxyan Zhu X-Patchwork-Id: 870417 Received: from m16.mail.163.com (m16.mail.163.com [220.197.31.4]) by smtp.subspace.kernel.org (Postfix) with ESMTP id AE9C520127D; Tue, 4 Mar 2025 12:53:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=220.197.31.4 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741092826; cv=none; b=DCwHFqnBZBjokAP2lgOmAZ05Ez5/UWbrOqhq0YR0tbeOvMdTEQtMbEaThslHFDHEiRVy8PwvRmlT/vP3aqxvYUFvvQ0YKNcnoiEBLfz4um23MAKMl6p3LYjfEyAZb5LOYFDUovFWkxO4OyWfEUtM6jhXVRodgQjNRvrSqqlhIsk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741092826; c=relaxed/simple; bh=SroIqtwDcZBI6USYWmrVQHd45regAWwrIk5senY15hQ=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=VMTYzYUIvx/P3H9WjkdnZgwe9rBtNRXso1nOiqGphw203VkyO2Gi7fEM46KtOUCZAPbDhN22Q6LNAo4BRRLOdQbIFRlvIMIxdGWJVcZi3EhvEDS8pl2wKVokGSieb1XigRO8iTmLqhcmlQI10ECS3c1rB8UxuGGRxMhOCDCr3Q4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=bPLXE3IP; arc=none smtp.client-ip=220.197.31.4 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="bPLXE3IP" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=5VkIE 0q8S0ZH3DD+BjbROvAubXkdtsXQCphn+uhJwiI=; b=bPLXE3IPi323vSZzaXpr1 AcrNetLkSrc5iEnoOUJAT+eKukbXYOsb8zfX2Vt5LLiV6yZbEbIXvqwLeg55hUmG utV7jb1YCd2BdWa9YVJombNPeI1BdE/I7JP0JBc1U2jSTiOLCTh4lMOP4BgALBL0 x1YLTDG8i4QV/JcckGrH8M= Received: from zhuxin.hobot.cc (unknown []) by gzga-smtp-mtada-g0-1 (Coremail) with SMTP id _____wAn7ISw98ZnSRmsPg--.2684S2; Tue, 04 Mar 2025 20:53:16 +0800 (CST) From: Zxyan Zhu To: vireshk@kernel.org Cc: nm@ti.com, sboyd@kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Zxyan Zhu Subject: [PATCH 1/1] OPP: Support multiple frequency points with opp-hz- Date: Tue, 4 Mar 2025 20:52:56 +0800 Message-Id: <20250304125256.3361648-1-zxyan20@163.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: _____wAn7ISw98ZnSRmsPg--.2684S2 X-Coremail-Antispam: 1Uf129KBjvJXoW7ArWxJF4UAFWkJF13trW5ZFb_yoW8uryfpF 43J398CrZ7J3y2gF97Ja1vvryavF4kXFWxKFy7C34jva17JF95Xw47tFyjq3Zayry7Z3y5 tayqgFy0ka10kw7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0piYhF7UUUUU= X-CM-SenderInfo: p201t0isq6il2tof0z/1tbioBQGXmfG7SDRDAAAsd Current OPP driver only supports a single frequency value per OPP entry using `opp-hz`. This patch extends the functionality to allow retrieving named frequency points using `opp-hz-`, improving flexibility for different operating modes. Signed-off-by: Zxyan Zhu --- drivers/opp/of.c | 28 ++++++++++++++++++++-------- 1 file changed, 20 insertions(+), 8 deletions(-) diff --git a/drivers/opp/of.c b/drivers/opp/of.c index a24f76f5fd01..d20802b0f89c 100644 --- a/drivers/opp/of.c +++ b/drivers/opp/of.c @@ -752,18 +752,30 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_of_remove_table); static int _read_rate(struct dev_pm_opp *new_opp, struct opp_table *opp_table, struct device_node *np) { - struct property *prop; + struct property *prop = NULL; int i, count, ret; u64 *rates; + char name[NAME_MAX]; - prop = of_find_property(np, "opp-hz", NULL); - if (!prop) - return -ENODEV; + /* Search for "opp-hz-" */ + if (opp_table->prop_name) { + snprintf(name, sizeof(name), "opp-hz-%s", + opp_table->prop_name); + prop = of_find_property(np, name, NULL); + } + + if (!prop) { + /* Search for "opp-hz" */ + sprintf(name, "opp-hz"); + prop = of_find_property(np, name, NULL); + if (!prop) + return -ENODEV; + } count = prop->length / sizeof(u64); if (opp_table->clk_count != count) { - pr_err("%s: Count mismatch between opp-hz and clk_count (%d %d)\n", - __func__, count, opp_table->clk_count); + pr_err("%s: Count mismatch between %s and clk_count (%d %d)\n", + __func__, name, count, opp_table->clk_count); return -EINVAL; } @@ -771,9 +783,9 @@ static int _read_rate(struct dev_pm_opp *new_opp, struct opp_table *opp_table, if (!rates) return -ENOMEM; - ret = of_property_read_u64_array(np, "opp-hz", rates, count); + ret = of_property_read_u64_array(np, name, rates, count); if (ret) { - pr_err("%s: Error parsing opp-hz: %d\n", __func__, ret); + pr_err("%s: Error parsing %s: %d\n", __func__, name, ret); } else { /* * Rate is defined as an unsigned long in clk API, and so