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path: root/drivers/clk/at91/sama7g5.c
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Diffstat (limited to 'drivers/clk/at91/sama7g5.c')
-rw-r--r--drivers/clk/at91/sama7g5.c29
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/clk/at91/sama7g5.c b/drivers/clk/at91/sama7g5.c
index cf8c079aa086..369dfafabbca 100644
--- a/drivers/clk/at91/sama7g5.c
+++ b/drivers/clk/at91/sama7g5.c
@@ -127,6 +127,8 @@ static const struct clk_pll_characteristics pll_characteristics = {
* @t: clock type
* @f: clock flags
* @eid: export index in sama7g5->chws[] array
+ * @safe_div: intermediate divider need to be set on PRE_RATE_CHANGE
+ * notification
*/
static const struct {
const char *n;
@@ -136,6 +138,7 @@ static const struct {
unsigned long f;
u8 t;
u8 eid;
+ u8 safe_div;
} sama7g5_plls[][PLL_ID_MAX] = {
[PLL_ID_CPU] = {
{ .n = "cpupll_fracck",
@@ -156,7 +159,12 @@ static const struct {
.t = PLL_TYPE_DIV,
/* This feeds CPU. It should not be disabled. */
.f = CLK_IS_CRITICAL | CLK_SET_RATE_PARENT,
- .eid = PMC_CPUPLL, },
+ .eid = PMC_CPUPLL,
+ /*
+ * Safe div=15 should be safe even for switching b/w 1GHz and
+ * 90MHz (frac pll might go up to 1.2GHz).
+ */
+ .safe_div = 15, },
},
[PLL_ID_SYS] = {
@@ -377,6 +385,7 @@ static const struct {
u8 id;
} sama7g5_periphck[] = {
{ .n = "pioA_clk", .p = "mck0", .id = 11, },
+ { .n = "securam_clk", .p = "mck0", .id = 18, },
{ .n = "sfr_clk", .p = "mck1", .id = 19, },
{ .n = "hsmc_clk", .p = "mck1", .id = 21, },
{ .n = "xdmac0_clk", .p = "mck1", .id = 22, },
@@ -841,7 +850,7 @@ static const struct {
/* MCK0 characteristics. */
static const struct clk_master_characteristics mck0_characteristics = {
- .output = { .min = 50000000, .max = 200000000 },
+ .output = { .min = 32768, .max = 200000000 },
.divisors = { 1, 2, 4, 3, 5 },
.have_div3_pres = 1,
};
@@ -966,7 +975,8 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
sama7g5_plls[i][j].p, i,
sama7g5_plls[i][j].c,
sama7g5_plls[i][j].l,
- sama7g5_plls[i][j].f);
+ sama7g5_plls[i][j].f,
+ sama7g5_plls[i][j].safe_div);
break;
default:
@@ -982,18 +992,9 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
}
parent_names[0] = "cpupll_divpmcck";
- hw = at91_clk_register_master_pres(regmap, "cpuck", 1, parent_names,
- &mck0_layout, &mck0_characteristics,
- &pmc_mck0_lock,
- CLK_SET_RATE_PARENT, 0);
- if (IS_ERR(hw))
- goto err_free;
-
- sama7g5_pmc->chws[PMC_CPU] = hw;
-
- hw = at91_clk_register_master_div(regmap, "mck0", "cpuck",
+ hw = at91_clk_register_master_div(regmap, "mck0", "cpupll_divpmcck",
&mck0_layout, &mck0_characteristics,
- &pmc_mck0_lock, 0);
+ &pmc_mck0_lock, CLK_GET_RATE_NOCACHE, 5);
if (IS_ERR(hw))
goto err_free;