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authorAnson Huang <anson.huang@nxp.com>2019-04-26 06:53:14 +0000
committerStephen Boyd <sboyd@kernel.org>2019-05-03 09:31:54 -0700
commita5a627c676590aaf381f38279ffdfacc963f18f4 (patch)
treebb7509698434e652eaa78a2ab0190e10b71c853a /drivers/clk
parent53dd5c709b335545eec76e3a401ad82764d42b6a (diff)
clk: imx: correct pfdv2 gate_bit/vld_bit operations
The operations of pfdv2 gate_bit/valid_bit are incorrect, they are defined as u8 for bit offset, but gate_bit is actually assigned as mask which could be 32 bit long and it causes overflow, and vld_bit is assigned as bit offset based on incorrect gate_bit value, it causes incorrect pfd clock gate status in clock tree, this patch fixes the issue by assigning them as correct bit offset. Fixes: 9fcb6be3b6c9 ("clk: imx: add pfdv2 support") Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/imx/clk-pfdv2.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/clk/imx/clk-pfdv2.c b/drivers/clk/imx/clk-pfdv2.c
index 7e9134b205ab..fb567dcc2118 100644
--- a/drivers/clk/imx/clk-pfdv2.c
+++ b/drivers/clk/imx/clk-pfdv2.c
@@ -43,7 +43,7 @@ static int clk_pfdv2_wait(struct clk_pfdv2 *pfd)
{
u32 val;
- return readl_poll_timeout(pfd->reg, val, val & pfd->vld_bit,
+ return readl_poll_timeout(pfd->reg, val, val & (1 << pfd->vld_bit),
0, LOCK_TIMEOUT_US);
}
@@ -55,7 +55,7 @@ static int clk_pfdv2_enable(struct clk_hw *hw)
spin_lock_irqsave(&pfd_lock, flags);
val = readl_relaxed(pfd->reg);
- val &= ~pfd->gate_bit;
+ val &= ~(1 << pfd->gate_bit);
writel_relaxed(val, pfd->reg);
spin_unlock_irqrestore(&pfd_lock, flags);
@@ -70,7 +70,7 @@ static void clk_pfdv2_disable(struct clk_hw *hw)
spin_lock_irqsave(&pfd_lock, flags);
val = readl_relaxed(pfd->reg);
- val |= pfd->gate_bit;
+ val |= (1 << pfd->gate_bit);
writel_relaxed(val, pfd->reg);
spin_unlock_irqrestore(&pfd_lock, flags);
}
@@ -123,7 +123,7 @@ static int clk_pfdv2_is_enabled(struct clk_hw *hw)
{
struct clk_pfdv2 *pfd = to_clk_pfdv2(hw);
- if (readl_relaxed(pfd->reg) & pfd->gate_bit)
+ if (readl_relaxed(pfd->reg) & (1 << pfd->gate_bit))
return 0;
return 1;
@@ -180,7 +180,7 @@ struct clk_hw *imx_clk_pfdv2(const char *name, const char *parent_name,
return ERR_PTR(-ENOMEM);
pfd->reg = reg;
- pfd->gate_bit = 1 << ((idx + 1) * 8 - 1);
+ pfd->gate_bit = (idx + 1) * 8 - 1;
pfd->vld_bit = pfd->gate_bit - 1;
pfd->frac_off = idx * 8;