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Subject[PATCH 1/3] clk: imx: pll14xx: avoid modify dram pll
Date
From: Peng Fan <peng.fan@nxp.com>

The dram pll is only expected to be modified in firmware,
so we should only support read clk frequency in Linux Kernel.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
drivers/clk/imx/clk-pll14xx.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c
index 5b0519a81a7a..9288b21d4d59 100644
--- a/drivers/clk/imx/clk-pll14xx.c
+++ b/drivers/clk/imx/clk-pll14xx.c
@@ -69,8 +69,6 @@ struct imx_pll14xx_clk imx_1443x_pll = {

struct imx_pll14xx_clk imx_1443x_dram_pll = {
.type = PLL_1443X,
- .rate_table = imx_pll1443x_tbl,
- .rate_count = ARRAY_SIZE(imx_pll1443x_tbl),
.flags = CLK_GET_RATE_NOCACHE,
};

@@ -376,6 +374,10 @@ static const struct clk_ops clk_pll1443x_ops = {
.set_rate = clk_pll1443x_set_rate,
};

+static const struct clk_ops clk_pll1443x_min_ops = {
+ .recalc_rate = clk_pll1443x_recalc_rate,
+};
+
struct clk_hw *imx_clk_hw_pll14xx(const char *name, const char *parent_name,
void __iomem *base,
const struct imx_pll14xx_clk *pll_clk)
@@ -403,7 +405,10 @@ struct clk_hw *imx_clk_hw_pll14xx(const char *name, const char *parent_name,
init.ops = &clk_pll1416x_ops;
break;
case PLL_1443X:
- init.ops = &clk_pll1443x_ops;
+ if (!pll_clk->rate_table)
+ init.ops = &clk_pll1443x_min_ops;
+ else
+ init.ops = &clk_pll1443x_ops;
break;
default:
pr_err("%s: Unknown pll type for pll clk %s\n",
--
2.16.4
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