redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

clk: sunxi-ng: a64: Add minimal rate for video PLLs 

According to documentation and experience with other similar SoCs, video
PLLs don't work stable if their output frequency is set below 192 MHz.

Because of that, set minimal rate to both A64 video PLLs to 192 MHz.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
hifive-unleashed-5.1
Jagan Teki 2018-09-04 12:40:43 +08:00 committed by Maxime Ripard
parent c2ff8383cc
commit 65b1e8a6ca
No known key found for this signature in database
GPG Key ID: D2B4C094214DAF74
1 changed files with 24 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
drivers/clk/sunxi-ng/ccu-sun50i-a64.c
View File

@ -64,17 +64,18 @@ static SUNXI_CCU_NM_WITH_GATE_LOCK(pll_audio_base_clk, "pll-audio-base",
BIT(28), /* lock */
CLK_SET_RATE_UNGATE);
static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK(pll_video0_clk, "pll-video0",
"osc24M", 0x010,
8, 7, /* N */
0, 4, /* M */
BIT(24), /* frac enable */
BIT(25), /* frac select */
270000000, /* frac rate 0 */
297000000, /* frac rate 1 */
BIT(31), /* gate */
BIT(28), /* lock */
CLK_SET_RATE_UNGATE);
static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK_MIN(pll_video0_clk, "pll-video0",
"osc24M", 0x010,
192000000, /* Minimum rate */
8, 7, /* N */
0, 4, /* M */
BIT(24), /* frac enable */
BIT(25), /* frac select */
270000000, /* frac rate 0 */
297000000, /* frac rate 1 */
BIT(31), /* gate */
BIT(28), /* lock */
CLK_SET_RATE_UNGATE);
static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK(pll_ve_clk, "pll-ve",
"osc24M", 0x018,
@ -125,17 +126,18 @@ static struct ccu_nk pll_periph1_clk = {
},
};
static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK(pll_video1_clk, "pll-video1",
"osc24M", 0x030,
8, 7, /* N */
0, 4, /* M */
BIT(24), /* frac enable */
BIT(25), /* frac select */
270000000, /* frac rate 0 */
297000000, /* frac rate 1 */
BIT(31), /* gate */
BIT(28), /* lock */
CLK_SET_RATE_UNGATE);
static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK_MIN(pll_video1_clk, "pll-video1",
"osc24M", 0x030,
192000000, /* Minimum rate */
8, 7, /* N */
0, 4, /* M */
BIT(24), /* frac enable */
BIT(25), /* frac select */
270000000, /* frac rate 0 */
297000000, /* frac rate 1 */
BIT(31), /* gate */
BIT(28), /* lock */
CLK_SET_RATE_UNGATE);
static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK(pll_gpu_clk, "pll-gpu",
"osc24M", 0x038,