linux-kernel - [PATCH] clk: at91: sam9x60: fix programmable clock

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Message-ID: <1569321191-27606-1-git-send-email-eugen.hristev@microchip.com>
Date:   Tue, 24 Sep 2019 10:39:09 +0000
From:   <Eugen.Hristev@...rochip.com>
To:     <mturquette@...libre.com>, <sboyd@...nel.org>,
        <alexandre.belloni@...tlin.com>, <linux-clk@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
CC:     <Nicolas.Ferre@...rochip.com>, <Eugen.Hristev@...rochip.com>
Subject: [PATCH] clk: at91: sam9x60: fix programmable clock

From: Eugen Hristev <eugen.hristev@...rochip.com>

The prescaler mask for sam9x60 must be 0xff (8 bits).
Being set to 0, means that we cannot set any prescaler, thus the
programmable clocks do not work (except the case with prescaler 0)
Set the mask accordingly in layout struct.

Fixes: 01e2113de9a5 ("clk: at91: add sam9x60 pmc driver")
Signed-off-by: Eugen Hristev <eugen.hristev@...rochip.com>
---
 drivers/clk/at91/sam9x60.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c
index 9790ddf..86238d5 100644
--- a/drivers/clk/at91/sam9x60.c
+++ b/drivers/clk/at91/sam9x60.c
@@ -43,6 +43,7 @@ static const struct clk_pll_characteristics upll_characteristics = {
 };
 
 static const struct clk_programmable_layout sam9x60_programmable_layout = {
+	.pres_mask = 0xff,
 	.pres_shift = 8,
 	.css_mask = 0x1f,
 	.have_slck_mck = 0,
-- 
2.7.4