linux-kernel - [PATCH 6/9] clk: tegra210: fix pllx dyn step calculation

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Date:	Thu, 10 Dec 2015 17:08:25 -0500
From:	Rhyland Klein <rklein@...dia.com>
To:	Peter De Schrijver <pdeschrijver@...dia.com>,
	Stephen Warren <swarren@...dotorg.org>,
	Thierry Reding <thierry.reding@...il.com>
CC:	Michael Turquette <mturquette@...libre.com>,
	linux-clk@...r.kernel.org, linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Andrew Bresticker <abrestic@...omium.org>,
	Rhyland Klein <rklein@...dia.com>
Subject: [PATCH 6/9] clk: tegra210: fix pllx dyn step calculation

The logic for calculating the input rate used when figuring out
the proper dynamic steps for pllx was incorrect. It is supposed to
be calculated using parent_rate / m but it was just using the parent
rate directly, therefore using the wrong step values.

Signed-off-by: Rhyland Klein <rklein@...dia.com>
---
 drivers/clk/tegra/clk-tegra210.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/clk/tegra/clk-tegra210.c b/drivers/clk/tegra/clk-tegra210.c
index 2a7faa357130..5d8fac7052f2 100644
--- a/drivers/clk/tegra/clk-tegra210.c
+++ b/drivers/clk/tegra/clk-tegra210.c
@@ -780,13 +780,13 @@ static void pllx_get_dyn_steps(struct clk_hw *hw, u32 *step_a, u32 *step_b)
 {
 	unsigned long input_rate;
 
-	if (!IS_ERR_OR_NULL(hw->clk)) {
+	/* cf rate */
+	if (!IS_ERR_OR_NULL(hw->clk))
 		input_rate = clk_hw_get_rate(clk_hw_get_parent(hw));
-		/* cf rate */
-		input_rate /= tegra_pll_get_fixed_mdiv(hw, input_rate);
-	} else {
+	else
 		input_rate = 38400000;
-	}
+
+	input_rate /= tegra_pll_get_fixed_mdiv(hw, input_rate);
 
 	switch (input_rate) {
 	case 12000000:
-- 
1.9.1

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