diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/cannonlake/chip.h | 3 | ||||
| -rw-r--r-- | src/soc/intel/cannonlake/finalize.c | 38 | ||||
| -rw-r--r-- | src/soc/intel/cannonlake/include/soc/pcr_ids.h | 1 |
3 files changed, 31 insertions, 11 deletions
diff --git a/src/soc/intel/cannonlake/chip.h b/src/soc/intel/cannonlake/chip.h index 5d1b714de9..0bbcdc44f3 100644 --- a/src/soc/intel/cannonlake/chip.h +++ b/src/soc/intel/cannonlake/chip.h @@ -263,6 +263,9 @@ struct soc_intel_cannonlake_config { /* I2C bus configuration */ struct dw_i2c_bus_config i2c[CANNONLAKE_I2C_DEV_MAX]; + + /* Enable Pch iSCLK */ + uint8_t pch_isclk; }; typedef struct soc_intel_cannonlake_config config_t; diff --git a/src/soc/intel/cannonlake/finalize.c b/src/soc/intel/cannonlake/finalize.c index 8aa7c04302..df4def21e9 100644 --- a/src/soc/intel/cannonlake/finalize.c +++ b/src/soc/intel/cannonlake/finalize.c @@ -37,6 +37,12 @@ #define PCR_PSFX_T0_SHDW_PCIEN 0x1C #define PCR_PSFX_T0_SHDW_PCIEN_FUNDIS (1 << 8) +#define CAMERA1_CLK 0x8000 /* Camera 1 Clock */ +#define CAMERA2_CLK 0x8080 /* Camera 2 Clock */ +#define CAM_CLK_EN (1 << 1) +#define MIPI_CLK (1 << 0) +#define HDPLL_CLK (0 << 0) + static void pch_configure_endpoints(device_t dev, int epmask_id, uint32_t mask) { uint32_t reg32; @@ -65,23 +71,35 @@ static void disable_sideband_access(void) static void pch_disable_heci(void) { + pcr_or32(PID_PSF1, PSF_BASE_ADDRESS + PCR_PSFX_T0_SHDW_PCIEN, + PCR_PSFX_T0_SHDW_PCIEN_FUNDIS); + disable_sideband_access(); +} + +static void pch_enable_isclk(void) +{ + pcr_or32(PID_ISCLK, CAMERA1_CLK, CAM_CLK_EN | MIPI_CLK); + pcr_or32(PID_ISCLK, CAMERA2_CLK, CAM_CLK_EN | MIPI_CLK); +} + +static void pch_handle_sideband(config_t *config) +{ device_t dev = PCH_DEV_P2SB; - /* - * if p2sb device 1f.1 is not present or hidden in devicetree - * p2sb device becomes NULL - */ if (!dev) return; + if (config->HeciEnabled && !config->pch_isclk) + return; + /* unhide p2sb device */ pci_write_config8(dev, PCH_P2SB_E0 + 1, 0); - /* disable heci#1 */ - pcr_or32(PID_PSF1, PSF_BASE_ADDRESS + PCR_PSFX_T0_SHDW_PCIEN, - PCR_PSFX_T0_SHDW_PCIEN_FUNDIS); + if (config->HeciEnabled == 0) + pch_disable_heci(); - disable_sideband_access(); + if (config->pch_isclk) + pch_enable_isclk(); /* hide p2sb device */ pci_write_config8(dev, PCH_P2SB_E0 + 1, 1); @@ -124,9 +142,7 @@ static void pch_finalize(void) write32(pmcbase + CPPMVRIC, reg32); } - /* we should disable Heci1 based on the devicetree policy */ - if (config->HeciEnabled == 0) - pch_disable_heci(); + pch_handle_sideband(config); } static void soc_finalize(void *unused) diff --git a/src/soc/intel/cannonlake/include/soc/pcr_ids.h b/src/soc/intel/cannonlake/include/soc/pcr_ids.h index 65576aabcb..b77eab831b 100644 --- a/src/soc/intel/cannonlake/include/soc/pcr_ids.h +++ b/src/soc/intel/cannonlake/include/soc/pcr_ids.h @@ -25,6 +25,7 @@ #define PID_GPIOCOM0 0x6e #define PID_DMI 0x88 #define PID_PSTH 0x89 +#define PID_ISCLK 0xad #define PID_PSF1 0xba #define PID_PSF2 0xbb #define PID_PSF3 0xbc |