Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-28 22:02:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

clk: sunxi-ng: h6: Set video PLLs limits

Browse Source 
Video PLL factors can be set in a way that final PLL rate is outside
stable range. H6 user manual specifically says that N factor should not
be below 12. While it doesn't says anything about maximum stable rate, it
is clear that PLL doesn't work at 6.096 GHz (254 * 24 MHz).

Set minimum allowed PLL video rate to 288 MHz (12 * 24 MHz) and maximum
to 2.4 GHz, which is maximum in BSP driver.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
This commit is contained in:
Jernej Skrabec 2018-11-04 19:26:41 +01:00 committed by Maxime Ripard
parent 65b6657672
commit ed4433419d
No known key found for this signature in database
GPG Key ID: E3EF0D6F671851C5
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/clk/sunxi-ng/ccu-sun50i-h6.c
View File

@ -120,6 +120,8 @@ static struct ccu_nm pll_video0_clk = {
.n = _SUNXI_CCU_MULT_MIN(8, 8, 12),
.m = _SUNXI_CCU_DIV(1, 1), /* input divider */
.fixed_post_div = 4,
.min_rate = 288000000,
.max_rate = 2400000000UL,
.common = {
.reg = 0x040,
.features = CCU_FEATURE_FIXED_POSTDIV,
@ -136,6 +138,8 @@ static struct ccu_nm pll_video1_clk = {
.n = _SUNXI_CCU_MULT_MIN(8, 8, 12),
.m = _SUNXI_CCU_DIV(1, 1), /* input divider */
.fixed_post_div = 4,
.min_rate = 288000000,
.max_rate = 2400000000UL,
.common = {
.reg = 0x048,
.features = CCU_FEATURE_FIXED_POSTDIV,