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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>
This commit is contained in:
Lee Jones 2016-06-07 12:19:27 +01:00 committed by Stephen Boyd
parent a3a2d78bd1
commit 6ca59e6e1f
1 changed files with 17 additions and 10 deletions
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27
drivers/clk/st/clkgen-pll.c
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@ -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);