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authorLee Jones <lee.jones@linaro.org>2016-06-07 12:19:27 +0100
committerStephen Boyd <sboyd@codeaurora.org>2016-06-30 12:17:11 -0700
commit6ca59e6e1fc3a8d7ccbf85ff036bd6ff40847c1a (patch)
treef3211146834a0d8a2b502ba3efda1508f74d2b27 /drivers/clk/st
parenta3a2d78bd1860472903929f7f2385278204d9164 (diff)
downloadlinux-6ca59e6e1fc3a8d7ccbf85ff036bd6ff40847c1a.tar.bz2
clk: st: clkgen-pll: Detect critical clocks
Utilise the new Critical Clock infrastructure to mark clocks which much not be disabled as CRITICAL. Clocks are marked as CRITICAL using clk flags. This patch also ensures flags are peculated through the framework in the correct manner. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Diffstat (limited to 'drivers/clk/st')
-rw-r--r--drivers/clk/st/clkgen-pll.c27
1 files changed, 17 insertions, 10 deletions
diff --git a/drivers/clk/st/clkgen-pll.c b/drivers/clk/st/clkgen-pll.c
index 38f6f3a9098e..0b5990e82e0d 100644
--- a/drivers/clk/st/clkgen-pll.c
+++ b/drivers/clk/st/clkgen-pll.c
@@ -840,7 +840,7 @@ static const struct clk_ops stm_pll4600c28_ops = {
static struct clk * __init clkgen_pll_register(const char *parent_name,
struct clkgen_pll_data *pll_data,
- void __iomem *reg,
+ void __iomem *reg, unsigned long pll_flags,
const char *clk_name, spinlock_t *lock)
{
struct clkgen_pll *pll;
@@ -854,7 +854,7 @@ static struct clk * __init clkgen_pll_register(const char *parent_name,
init.name = clk_name;
init.ops = pll_data->ops;
- init.flags = CLK_IS_BASIC | CLK_GET_RATE_NOCACHE;
+ init.flags = pll_flags | CLK_IS_BASIC | CLK_GET_RATE_NOCACHE;
init.parent_names = &parent_name;
init.num_parents = 1;
@@ -948,7 +948,7 @@ static void __init clkgena_c65_pll_setup(struct device_node *np)
*/
clk_data->clks[0] = clkgen_pll_register(parent_name,
(struct clkgen_pll_data *) &st_pll1600c65_ax,
- reg + CLKGENAx_PLL0_OFFSET, clk_name, NULL);
+ reg + CLKGENAx_PLL0_OFFSET, 0, clk_name, NULL);
if (IS_ERR(clk_data->clks[0]))
goto err;
@@ -977,7 +977,7 @@ static void __init clkgena_c65_pll_setup(struct device_node *np)
*/
clk_data->clks[2] = clkgen_pll_register(parent_name,
(struct clkgen_pll_data *) &st_pll800c65_ax,
- reg + CLKGENAx_PLL1_OFFSET, clk_name, NULL);
+ reg + CLKGENAx_PLL1_OFFSET, 0, clk_name, NULL);
if (IS_ERR(clk_data->clks[2]))
goto err;
@@ -995,7 +995,7 @@ CLK_OF_DECLARE(clkgena_c65_plls,
static struct clk * __init clkgen_odf_register(const char *parent_name,
void __iomem *reg,
struct clkgen_pll_data *pll_data,
- int odf,
+ unsigned long pll_flags, int odf,
spinlock_t *odf_lock,
const char *odf_name)
{
@@ -1004,7 +1004,7 @@ static struct clk * __init clkgen_odf_register(const char *parent_name,
struct clk_gate *gate;
struct clk_divider *div;
- flags = CLK_GET_RATE_NOCACHE | CLK_SET_RATE_PARENT;
+ flags = pll_flags | CLK_GET_RATE_NOCACHE | CLK_SET_RATE_PARENT;
gate = kzalloc(sizeof(*gate), GFP_KERNEL);
if (!gate)
@@ -1099,6 +1099,7 @@ static void __init clkgen_c32_pll_setup(struct device_node *np)
int num_odfs, odf;
struct clk_onecell_data *clk_data;
struct clkgen_pll_data *data;
+ unsigned long pll_flags = 0;
match = of_match_node(c32_pll_of_match, np);
if (!match) {
@@ -1116,8 +1117,10 @@ static void __init clkgen_c32_pll_setup(struct device_node *np)
if (!pll_base)
return;
- clk = clkgen_pll_register(parent_name, data, pll_base, np->name,
- data->lock);
+ of_clk_detect_critical(np, 0, &pll_flags);
+
+ clk = clkgen_pll_register(parent_name, data, pll_base, pll_flags,
+ np->name, data->lock);
if (IS_ERR(clk))
return;
@@ -1139,12 +1142,15 @@ static void __init clkgen_c32_pll_setup(struct device_node *np)
for (odf = 0; odf < num_odfs; odf++) {
struct clk *clk;
const char *clk_name;
+ unsigned long odf_flags = 0;
if (of_property_read_string_index(np, "clock-output-names",
odf, &clk_name))
return;
- clk = clkgen_odf_register(pll_name, pll_base, data,
+ of_clk_detect_critical(np, odf, &odf_flags);
+
+ clk = clkgen_odf_register(pll_name, pll_base, data, odf_flags,
odf, &clkgena_c32_odf_lock, clk_name);
if (IS_ERR(clk))
goto err;
@@ -1206,7 +1212,8 @@ static void __init clkgengpu_c32_pll_setup(struct device_node *np)
/*
* PLL 1200MHz output
*/
- clk = clkgen_pll_register(parent_name, data, reg, clk_name, data->lock);
+ clk = clkgen_pll_register(parent_name, data, reg,
+ 0, clk_name, data->lock);
if (!IS_ERR(clk))
of_clk_add_provider(np, of_clk_src_simple_get, clk);