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mb/google/puff: Update psyspl2 to 97% of adapter rating 

Set psyspl2 to 97% of adapter rating, based on our experiment results.

BUG=b:160676773
TEST=Built and check firmware log.

Signed-off-by: David Wu <david_wu@quanta.corp-partner.google.com>
Change-Id: I4b621a8cc1749ee52a9f16a7ad2ae7a7aa0f7a5a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44805
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Sam McNally <sammc@google.com>
Reviewed-by: Daniel Kurtz <djkurtz@google.com>
This commit is contained in:
David Wu 2020-08-26 14:20:32 +08:00 committed by Edward O'Callaghan
parent 21910f00de
commit 81a2f45bd2
1 changed files with 3 additions and 3 deletions
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6
src/mainboard/google/hatch/variants/baseboard/mainboard.c
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@ -35,10 +35,10 @@ static void wait_for_hpd(gpio_t gpio, long timeout)
} }
/* /*
* For type-C chargers, set PL2 to 90% of max power to account for * For type-C chargers, set PL2 to 97% of max power to account for
* cable loss and FET Rdson loss in the path from the source. * cable loss and FET Rdson loss in the path from the source.
*/ */
#define SET_PSYSPL2(w) (9 * (w) / 10) #define SET_PSYSPL2(w) (97 * (w) / 100)
#define PUFF_U22_PL2 (35) #define PUFF_U22_PL2 (35)
#define PUFF_U62_U42_PL2 (51) #define PUFF_U62_U42_PL2 (51)
#define PUFF_CELERON_PENTIUM_PSYSPL2 (65) #define PUFF_CELERON_PENTIUM_PSYSPL2 (65)
@ -65,7 +65,7 @@ static void wait_for_hpd(gpio_t gpio, long timeout)
* +-------------+-----------------+---------+---------+-------+ * +-------------+-----------------+---------+---------+-------+
* | Max Power(W)| PL2 | PsysPL2 | PsysPL3 | PL4 | * | Max Power(W)| PL2 | PsysPL2 | PsysPL3 | PL4 |
* +-------------+-----+-----------+---------+---------+-------+ * +-------------+-----+-----------+---------+---------+-------+
* | n | min(0.9n, PL2) | 0.9n | 0.9n | 0.9n | * | n | min(0.97n, PL2) | 0.97n | 0.97n | 0.97n |
* +-------------+-----+-----------+---------+---------+-------+ * +-------------+-----+-----------+---------+---------+-------+
*/ */