linux-kernel - [PATCH AUTOSEL for 4.15 048/189] clk: ingenic: Fix recalc

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Message-ID: <20180409001637.162453-48-alexander.levin@microsoft.com>
Date:   Mon, 9 Apr 2018 00:17:24 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Paul Cercueil <paul@...pouillou.net>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Maarten ter Huurne <maarten@...ewalker.org>,
        "linux-mips@...ux-mips.org" <linux-mips@...ux-mips.org>,
        James Hogan <jhogan@...nel.org>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.15 048/189] clk: ingenic: Fix recalc_rate for
 clocks with fixed divider

From: Paul Cercueil <paul@...pouillou.net>

[ Upstream commit e6cfa64375d34a6c8c1861868a381013b2d3b921 ]

Previously, the clocks with a fixed divider would report their rate
as being the same as the one of their parent, independently of the
divider in use. This commit fixes this behaviour.

This went unnoticed as neither the jz4740 nor the jz4780 CGU code
have clocks with fixed dividers yet.

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
Acked-by: Stephen Boyd <sboyd@...eaurora.org>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: Maarten ter Huurne <maarten@...ewalker.org>
Cc: linux-mips@...ux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/18477/
Signed-off-by: James Hogan <jhogan@...nel.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 drivers/clk/ingenic/cgu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/clk/ingenic/cgu.c b/drivers/clk/ingenic/cgu.c
index ab393637f7b0..a2e73a6d60fd 100644
--- a/drivers/clk/ingenic/cgu.c
+++ b/drivers/clk/ingenic/cgu.c
@@ -328,6 +328,8 @@ ingenic_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
 		div *= clk_info->div.div;
 
 		rate /= div;
+	} else if (clk_info->type & CGU_CLK_FIXDIV) {
+		rate /= clk_info->fixdiv.div;
 	}
 
 	return rate;
-- 
2.15.1