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| author | Maxim Polyakov <max.senia.poliak@gmail.com> | 2019-07-10 18:33:28 +0300 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2019-07-21 18:53:00 +0000 |
| commit | f357f7e264baf35f98e216ac59abe71770147f40 (patch) | |
| tree | 9b8c09a5282ed0d0fc78e2e3df695d1a97757e58 | |
| parent | 6f76d0b12fcc04a118cb8827b58f56f395435fbb (diff) | |
| download | coreboot-f357f7e264baf35f98e216ac59abe71770147f40.tar.xz | |
soc/intel/common: add PAD_CFG_NF_BUF_TRIG macro
In the case there is no the circuit diagram for motherboard, the
PCH/SoC GPIOs config is based on information from the inteltool
dump. However, available macros from gpio_defs.h can't define the
pad configuration from this dump:
0x0440: 0x0000002084000500 GPP_A8 CLKRUN#
0x0448: 0x0000102184000600 GPP_A9 CLKOUT_LPC0
0x0450: 0x0000102284000600 GPP_A10 CLKOUT_LPC1
To convert these raw DW0/DW1 register values to macros, the following
parameters must be set:
func - pad function,
pull - termination,
rst - pad reset config,
trig - rx level/edge configuration,
bufdis - rx/tx (in/output) buffer disable.
The patch resolves the above problem by adding a new macro for the
native function configuration:
PAD_CFG_NF_BUF_TRIG(pad, pull, rst, func, bufdis, trig)
These changes were tested on Asrock H110M-DVS motherboard [2].
It also resolves the problem of automatically creating pads
configuration [3,4]
[1] page 1429,Intel (R) 100 Series and Intel (R) C230 Series PCH
Family Platform Controller Hub (PCH), Datasheet, Vol 2 of 2,
February 2019, Document Number: 332691-003EN
https://www.intel.com/content/dam/www/public/us/en/documents/
datasheets/100-series-chipset-datasheet-vol-2.pdf
[2] https://review.coreboot.org/c/coreboot/+/33565
[3] https://github.com/maxpoliak/pch-pads-parser/issues/1
[4] https://github.com/maxpoliak/pch-pads-parser/commit/215d303
Change-Id: If9fe50ff9a680633db6228564345200c0e1ee3ea
Signed-off-by: Maxim Polyakov <max.senia.poliak@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34337
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/soc/intel/common/block/include/intelblocks/gpio_defs.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/include/intelblocks/gpio_defs.h b/src/soc/intel/common/block/include/intelblocks/gpio_defs.h index e1ddd4babb..0a3e11737a 100644 --- a/src/soc/intel/common/block/include/intelblocks/gpio_defs.h +++ b/src/soc/intel/common/block/include/intelblocks/gpio_defs.h @@ -134,6 +134,15 @@ #define PAD_RESET(value) PAD_CFG0_LOGICAL_RESET_##value #define PAD_PULL(value) PAD_CFG1_PULL_##value +/* Disable the input/output buffer of the pad */ +#define PAD_CFG0_BUF_NO_DISABLE (0) +#define PAD_CFG0_BUF_TX_DISABLE PAD_CFG0_TX_DISABLE +#define PAD_CFG0_BUF_RX_DISABLE PAD_CFG0_RX_DISABLE +#define PAD_CFG0_BUF_TX_RX_DISABLE \ + (PAD_CFG0_TX_DISABLE | PAD_CFG0_RX_DISABLE) + +#define PAD_BUF(value) PAD_CFG0_BUF_##value + #if CONFIG(SOC_INTEL_COMMON_BLOCK_GPIO_IOSTANDBY) #define PAD_IOSSTATE(value) PAD_CFG1_IOSSTATE_##value #define PAD_IOSTERM(value) PAD_CFG1_IOSTERM_##value @@ -180,6 +189,15 @@ _PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull) | \ PAD_IOSSTATE(TxLASTRxE)) +/* + * Set native function with RX Level/Edge configuration and disable + * input/output buffer if necessary + */ +#define PAD_CFG_NF_BUF_TRIG(pad, pull, rst, func, bufdis, trig) \ + _PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_CFG0_TRIG_##trig | \ + PAD_BUF(bufdis) | PAD_FUNC(func), \ + PAD_PULL(pull) | PAD_IOSSTATE(TxLASTRxE)) + #if CONFIG(SOC_INTEL_COMMON_BLOCK_GPIO_PADCFG_PADTOL) /* Native 1.8V tolerant pad, only applies to some pads like I2C/I2S Not applicable to all SOCs. Refer EDS |