[coreboot-gerrit] New patch to review for coreboot: 91c0945 tegra124: fix PLLU parameters
Marc Jones (marc.jones@se-eng.com)
gerrit at coreboot.org
Tue Nov 11 04:14:18 CET 2014
Marc Jones (marc.jones at se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/7411
-gerrit
commit 91c0945352a78967317da9e58763daf231dc4c99
Author: Andrew Bresticker <abrestic at chromium.org>
Date: Tue Mar 4 11:06:13 2014 -0800
tegra124: fix PLLU parameters
Fix the PLLU parameters to match the recommended values from the TRM,
and the values used by the kernel and LP0 blob. This includes adding
support for setting an LFCON value. It appears that changing the PLLU
parameters across suspend/resume causes XHCI stability issues after
resume.
BUG=chrome-os-partner:26326
TEST=XHCI works after LP0 suspend/resume on Nyan.
BRANCH=none
Original-Change-Id: Ia4af12fefeebe607803e7f2f03ee4802367b82c3
Original-Signed-off-by: Andrew Bresticker <abrestic at chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/188752
Original-Reviewed-by: Julius Werner <jwerner at chromium.org>
Original-Reviewed-by: Tom Warren <twarren at nvidia.com>
(cherry picked from commit bbc8d92eb462e165c2378bcb3055a3a74b47a19b)
Signed-off-by: Marc Jones <marc.jones at se-eng.com>
Change-Id: I687d1709befc2f5dec094ee423f2ff824412996e
---
src/soc/nvidia/tegra124/clock.c | 31 +++++++++++++++++++------------
1 file changed, 19 insertions(+), 12 deletions(-)
diff --git a/src/soc/nvidia/tegra124/clock.c b/src/soc/nvidia/tegra124/clock.c
index 7977bbe..3855335 100644
--- a/src/soc/nvidia/tegra124/clock.c
+++ b/src/soc/nvidia/tegra124/clock.c
@@ -35,8 +35,9 @@ struct pll_dividers {
u32 n : 10;
u32 m : 8;
u32 p : 4;
- u32 cpcon: 4;
- u32 : 6;
+ u32 cpcon : 4;
+ u32 lfcon : 4;
+ u32 : 2;
};
/* Some PLLs have more restrictive divider bit lengths or are missing some
@@ -66,7 +67,8 @@ struct pllu_dividers {
u32 p : 1;
u32 : 3;
u32 cpcon : 4;
- u32 : 6;
+ u32 lfcon : 4;
+ u32 : 2;
};
union __attribute__((transparent_union)) pll_fields {
@@ -98,7 +100,7 @@ struct {
.pllp = {.n = 34, .m = 1, .p = 0, .cpcon = 2},
.pllc = {.n = 50, .m = 1, .p = 0},
.plld = {.n = 283, .m = 12, .p = 0, .cpcon = 8}, /* 283 MHz */
- .pllu = {.n = 80, .m = 1, .p = 0, .cpcon = 3},
+ .pllu = {.n = 960, .m = 12, .p = 0, .cpcon = 12, .lfcon = 2},
.plldp = {.n = 90, .m = 1, .p = 3}, /* 270 MHz */
.plld2 = {.n = 95, .m = 1, .p = 1}, /* 570 MHz */
},
@@ -108,7 +110,7 @@ struct {
.pllp = {.n = 408, .m = 13, .p = 0, .cpcon = 8},
.pllc = {.n = 231, .m = 5, .p = 0}, /* 600.6 MHz */
.plld = {.n = 283, .m = 13, .p = 0, .cpcon = 8}, /* 283 MHz*/
- .pllu = {.n = 960, .m = 13, .p = 0, .cpcon = 12},
+ .pllu = {.n = 960, .m = 13, .p = 0, .cpcon = 12, .lfcon = 2},
.plldp = {.n = 83, .m = 1, .p = 3}, /* 269.75 MHz */
.plld2 = {.n = 88, .m = 1, .p = 1}, /* 572 MHz */
},
@@ -118,7 +120,7 @@ struct {
.pllp = {.n = 170, .m = 7, .p = 0, .cpcon = 4},
.pllc = {.n = 250, .m = 7, .p = 0},
.plld = {.n = 286, .m = 17, .p = 0, .cpcon = 8}, /* 282.6 MHz*/
- .pllu = {.n = 400, .m = 7, .p = 0, .cpcon = 8},
+ .pllu = {.n = 400, .m = 7, .p = 0, .cpcon = 5, .lfcon = 2},
.plldp = {.n = 64, .m = 1, .p = 3}, /* 268.8 MHz */
.plld2 = {.n = 68, .m = 1, .p = 1}, /* 571.2 MHz */
},
@@ -128,7 +130,7 @@ struct {
.pllp = {.n = 85, .m = 4, .p = 0, .cpcon = 3},
.pllc = {.n = 125, .m = 4, .p = 0},
.plld = {.n = 251, .m = 17, .p = 0, .cpcon = 8}, /* 283.5 MHz */
- .pllu = {.n = 50, .m = 1, .p = 0, .cpcon = 2},
+ .pllu = {.n = 200, .m = 4, .p = 0, .cpcon = 3, .lfcon = 2},
.plldp = {.n = 56, .m = 1, .p = 3}, /* 270.75 MHz */
.plld2 = {.n = 59, .m = 1, .p = 1}, /* 570 MHz */
},
@@ -138,7 +140,7 @@ struct {
.pllp = {.n = 204, .m = 13, .p = 0, .cpcon = 5},
.pllc = {.n = 23, .m = 1, .p = 0}, /* 598 MHz */
.plld = {.n = 283, .m = 26, .p = 0, .cpcon = 8}, /* 283 MHz */
- .pllu = {.n = 480, .m = 13, .p = 0, .cpcon = 8},
+ .pllu = {.n = 960, .m = 26, .p = 0, .cpcon = 12, .lfcon = 2},
.plldp = {.n = 83, .m = 2, .p = 3}, /* 266.50 MHz */
.plld2 = {.n = 88, .m = 2, .p = 1}, /* 570 MHz */
},
@@ -152,7 +154,7 @@ struct {
.pllp = {.n = 85, .m = 4, .p = 0, .cpcon = 3},
.pllc = {.n = 125, .m = 4, .p = 0},
.plld = {.n = 125, .m = 17, .p = 0, .cpcon = 8}, /* 282.4 MHz */
- .pllu = {.n = 50, .m = 1, .p = 0, .cpcon = 2},
+ .pllu = {.n = 200, .m = 4, .p = 0, .cpcon = 3, .lfcon = 2},
.plldp = {.n = 56, .m = 2, .p = 3}, /* 268 MHz */
.plld2 = {.n = 59, .m = 2, .p = 1}, /* 566 MHz */
},
@@ -166,7 +168,7 @@ struct {
.pllp = {.n = 24, .m = 1, .p = 0, .cpcon = 2},
.pllc = {.n = 50, .m = 1, .p = 0},
.plld = {.n = 71, .m = 12, .p = 0, .cpcon = 8}, /* 284 MHz */
- .pllu = {.n = 80, .m = 1, .p = 0, .cpcon = 3},
+ .pllu = {.n = 960, .m = 12, .p = 0, .cpcon = 12, .lfcon = 2},
.plldp = {.n = 90, .m = 4, .p = 3}, /* 264 MHz */
.plld2 = {.n = 95, .m = 4, .p = 1}, /* 570 MHz */
},
@@ -224,11 +226,16 @@ static void init_pll(u32 *base, u32 *misc, const union pll_fields pll)
u32 dividers = pll.div.n << PLL_BASE_DIVN_SHIFT |
pll.div.m << PLL_BASE_DIVM_SHIFT |
pll.div.p << PLL_BASE_DIVP_SHIFT;
+ u32 misc_con = pll.div.cpcon << PLL_MISC_CPCON_SHIFT |
+ pll.div.lfcon << PLL_MISC_LFCON_SHIFT;
/* Write dividers but BYPASS the PLL while we're messing with it. */
writel(dividers | PLL_BASE_BYPASS, base);
- /* Set CPCON field (defaults to 0 if it doesn't exist for this PLL) */
- writel(pll.div.cpcon << PLL_MISC_CPCON_SHIFT, misc);
+ /*
+ * Set CPCON and LFCON fields (default to 0 if it doesn't exist for
+ * this PLL)
+ */
+ writel(misc_con, misc);
/* enable PLL and take it back out of BYPASS (we don't wait for lock
* because we assume that to be done by the time we start using it). */
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