From patchwork Fri Jun 23 20:30:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Varshini Rajendran X-Patchwork-Id: 695702 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 059C0C04E69 for ; Fri, 23 Jun 2023 20:36:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232238AbjFWUgb (ORCPT ); Fri, 23 Jun 2023 16:36:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53284 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232066AbjFWUgY (ORCPT ); Fri, 23 Jun 2023 16:36:24 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3EA9B2944; Fri, 23 Jun 2023 13:35:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1687552555; x=1719088555; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=BjHeEGjJH4FK+Dy2tpLAgiAMGYHda5kF0H68rjaLOR0=; b=LeOqayjxXlyW+efmTb3n9XMeSSb9+gHRx8umPtrvd0GmI9x3CAz0fvVx B8667wAB8QTHMHxt9E1RNZeVV+2hYs4rC5felaHD82sYGw76+ntjbGtpg 68WYWM75p+odOrqaRNG7QxhgTYeWIAQdWD5lu/ADoxPyNEir/OviWdwSw NHbA7THis1HcJ7XOJ01F7hRjFrDonmVvWkIfx9HLhu7ONoj1T9PRVNSxa VAOBf9gwoaSeqwKXaxZik3GQNJlDwzQgPjl0nGES6HOfl6pPREJrDGjw+ m6jnTeG2Ow/2BzYeyUdAf2dvwMaHcYJK/TvKLfJ1iw4uRoTYnVST2wjjZ A==; X-IronPort-AV: E=Sophos;i="6.01,153,1684825200"; d="scan'208";a="220216416" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa5.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 23 Jun 2023 13:35:33 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.21; Fri, 23 Jun 2023 13:35:25 -0700 Received: from che-lt-i67070.amer.actel.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.21 via Frontend Transport; Fri, 23 Jun 2023 13:34:56 -0700 From: Varshini Rajendran To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , Subject: [PATCH v2 08/45] clk: at91: clk-sam9x60-pll: re-factor to support individual core freq outputs Date: Sat, 24 Jun 2023 02:00:19 +0530 Message-ID: <20230623203056.689705-9-varshini.rajendran@microchip.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230623203056.689705-1-varshini.rajendran@microchip.com> References: <20230623203056.689705-1-varshini.rajendran@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org SAM9X7 SoC family supports different core output frequencies for different PLL IDs. To handle the same in the PLL driver, a separate parameter core_output is added. The sam9x60 and sama7g5 SoC PMC drivers are aligned to the PLL driver by adding the core output freq range in the PLL characteristics configurations. Signed-off-by: Varshini Rajendran --- drivers/clk/at91/clk-sam9x60-pll.c | 12 ++++++------ drivers/clk/at91/pmc.h | 1 + drivers/clk/at91/sam9x60.c | 7 +++++++ drivers/clk/at91/sama7g5.c | 7 +++++++ 4 files changed, 21 insertions(+), 6 deletions(-) diff --git a/drivers/clk/at91/clk-sam9x60-pll.c b/drivers/clk/at91/clk-sam9x60-pll.c index 0882ed01d5c2..b3012641214c 100644 --- a/drivers/clk/at91/clk-sam9x60-pll.c +++ b/drivers/clk/at91/clk-sam9x60-pll.c @@ -23,9 +23,6 @@ #define UPLL_DIV 2 #define PLL_MUL_MAX (FIELD_GET(PMC_PLL_CTRL1_MUL_MSK, UINT_MAX) + 1) -#define FCORE_MIN (600000000) -#define FCORE_MAX (1200000000) - #define PLL_MAX_ID 7 struct sam9x60_pll_core { @@ -194,7 +191,8 @@ static long sam9x60_frac_pll_compute_mul_frac(struct sam9x60_pll_core *core, unsigned long nmul = 0; unsigned long nfrac = 0; - if (rate < FCORE_MIN || rate > FCORE_MAX) + if (rate < core->characteristics->core_output[0].min || + rate > core->characteristics->core_output[0].max) return -ERANGE; /* @@ -214,7 +212,8 @@ static long sam9x60_frac_pll_compute_mul_frac(struct sam9x60_pll_core *core, } /* Check if resulted rate is a valid. */ - if (tmprate < FCORE_MIN || tmprate > FCORE_MAX) + if (tmprate < core->characteristics->core_output[0].min || + tmprate > core->characteristics->core_output[0].max) return -ERANGE; if (update) { @@ -666,7 +665,8 @@ sam9x60_clk_register_frac_pll(struct regmap *regmap, spinlock_t *lock, goto free; } - ret = sam9x60_frac_pll_compute_mul_frac(&frac->core, FCORE_MIN, + ret = sam9x60_frac_pll_compute_mul_frac(&frac->core, + characteristics->core_output[0].min, parent_rate, true); if (ret < 0) { hw = ERR_PTR(ret); diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h index 1b3ca7dd9b57..3e36dcc464c1 100644 --- a/drivers/clk/at91/pmc.h +++ b/drivers/clk/at91/pmc.h @@ -75,6 +75,7 @@ struct clk_pll_characteristics { struct clk_range input; int num_output; const struct clk_range *output; + const struct clk_range *core_output; u16 *icpll; u8 *out; u8 upll : 1; diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c index ac070db58195..452ad45cf251 100644 --- a/drivers/clk/at91/sam9x60.c +++ b/drivers/clk/at91/sam9x60.c @@ -26,10 +26,16 @@ static const struct clk_range plla_outputs[] = { { .min = 2343750, .max = 1200000000 }, }; +/* Fractional PLL core output range. */ +static const struct clk_range core_outputs[] = { + { .min = 600000000, .max = 1200000000 }, +}; + static const struct clk_pll_characteristics plla_characteristics = { .input = { .min = 12000000, .max = 48000000 }, .num_output = ARRAY_SIZE(plla_outputs), .output = plla_outputs, + .core_output = core_outputs, }; static const struct clk_range upll_outputs[] = { @@ -40,6 +46,7 @@ static const struct clk_pll_characteristics upll_characteristics = { .input = { .min = 12000000, .max = 48000000 }, .num_output = ARRAY_SIZE(upll_outputs), .output = upll_outputs, + .core_output = core_outputs, .upll = true, }; diff --git a/drivers/clk/at91/sama7g5.c b/drivers/clk/at91/sama7g5.c index f135b662f1ff..468a3c5449b5 100644 --- a/drivers/clk/at91/sama7g5.c +++ b/drivers/clk/at91/sama7g5.c @@ -104,11 +104,17 @@ static const struct clk_range pll_outputs[] = { { .min = 2343750, .max = 1200000000 }, }; +/* Fractional PLL core output range. */ +static const struct clk_range core_outputs[] = { + { .min = 600000000, .max = 1200000000 }, +}; + /* CPU PLL characteristics. */ static const struct clk_pll_characteristics cpu_pll_characteristics = { .input = { .min = 12000000, .max = 50000000 }, .num_output = ARRAY_SIZE(cpu_pll_outputs), .output = cpu_pll_outputs, + .core_output = core_outputs, }; /* PLL characteristics. */ @@ -116,6 +122,7 @@ static const struct clk_pll_characteristics pll_characteristics = { .input = { .min = 12000000, .max = 50000000 }, .num_output = ARRAY_SIZE(pll_outputs), .output = pll_outputs, + .core_output = core_outputs, }; /*