From patchwork Mon Jan 8 15:33:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 760865 Received: from cantor.telenet-ops.be (cantor.telenet-ops.be [195.130.132.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7FD9951039 for ; Mon, 8 Jan 2024 15:34:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=glider.be Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux-m68k.org Received: from andre.telenet-ops.be (andre.telenet-ops.be [IPv6:2a02:1800:120:4::f00:15]) by cantor.telenet-ops.be (Postfix) with ESMTPS id 4T7ylg40nlz4wyFG for ; Mon, 8 Jan 2024 16:34:07 +0100 (CET) Received: from ramsan.of.borg ([IPv6:2a02:1810:ac12:ed40:d323:2fd4:4f64:e281]) by andre.telenet-ops.be with bizsmtp id YFZw2B0050Qz0eJ01FZwK0; Mon, 08 Jan 2024 16:34:07 +0100 Received: from rox.of.borg ([192.168.97.57]) by ramsan.of.borg with esmtp (Exim 4.95) (envelope-from ) id 1rMrcp-00EtMA-5I; Mon, 08 Jan 2024 16:33:56 +0100 Received: from geert by rox.of.borg with local (Exim 4.95) (envelope-from ) id 1rMrdU-00D7oG-C3; Mon, 08 Jan 2024 16:33:56 +0100 From: Geert Uytterhoeven To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Philipp Zabel , Magnus Damm , Catalin Marinas , Will Deacon , Ulf Hansson Cc: Cong Dang , Duy Nguyen , Hai Pham , Linh Phung , linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH 07/15] clk: renesas: rcar-gen4: Add support for FRQCRC1 Date: Mon, 8 Jan 2024 16:33:46 +0100 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 R-Car V4H and V4M have a second Frequency Control Register C. Add support for this by treating bit field offsets beyond 31 as referring to the second register. Signed-off-by: Geert Uytterhoeven Reviewed-by: Wolfram Sang --- Tested by enabling CLOCK_ALLOW_WRITE_DEBUGFS and checking the impact of CPU core clk rate on CPU core speed on R-Car V4M. --- drivers/clk/renesas/rcar-gen4-cpg.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/clk/renesas/rcar-gen4-cpg.c b/drivers/clk/renesas/rcar-gen4-cpg.c index c68d8b987054131b..a2bbdad021ed8e95 100644 --- a/drivers/clk/renesas/rcar-gen4-cpg.c +++ b/drivers/clk/renesas/rcar-gen4-cpg.c @@ -179,7 +179,8 @@ static struct clk * __init cpg_pll_clk_register(const char *name, */ #define CPG_FRQCRB 0x00000804 #define CPG_FRQCRB_KICK BIT(31) -#define CPG_FRQCRC 0x00000808 +#define CPG_FRQCRC0 0x00000808 +#define CPG_FRQCRC1 0x000008e0 struct cpg_z_clk { struct clk_hw hw; @@ -304,7 +305,12 @@ static struct clk * __init cpg_z_clk_register(const char *name, init.parent_names = &parent_name; init.num_parents = 1; - zclk->reg = reg + CPG_FRQCRC; + if (offset < 32) { + zclk->reg = reg + CPG_FRQCRC0; + } else { + zclk->reg = reg + CPG_FRQCRC1; + offset -= 32; + } zclk->kick_reg = reg + CPG_FRQCRB; zclk->hw.init = &init; zclk->mask = GENMASK(offset + 4, offset);