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drivers: ssp: start with xtal clock on ssp ver >= 2.0

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This patch will save configured link clock and ensure
ssp starts with xtal clock if ssp ver >= 2.0

Signed-off-by: Adrian Bonislawski <adrian.bonislawski@intel.com>
This commit is contained in:
Adrian Bonislawski 2024-12-17 10:52:19 +01:00 committed by Benjamin Cabé
parent e34f19a8ca
commit b0416f51b6
2 changed files with 19 additions and 0 deletions
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18
drivers/dai/intel/ssp/ssp.c
View file

@ -1936,6 +1936,7 @@ static int dai_ssp_parse_tlv(struct dai_intel_ssp *dp, const uint8_t *aux_ptr, s
struct ssp_intel_ext_ctl *ext;
#if SSP_IP_VER >= SSP_IP_VER_1_5
struct ssp_intel_link_ctl *link;
struct dai_intel_ssp_plat_data *ssp = dai_get_plat_data(dp);
#endif
for (i = 0; i < aux_len; i += hop) {
@ -1989,6 +1990,7 @@ static int dai_ssp_parse_tlv(struct dai_intel_ssp *dp, const uint8_t *aux_ptr, s
I2CLCTL_MLCS(link->clock_source), dai_ip_base(dp) +
I2SLCTL_OFFSET);
#elif SSP_IP_VER > SSP_IP_VER_1_5
ssp->link_clock = link->clock_source;
sys_write32((sys_read32(dai_i2svss_base(dp) + I2SLCTL_OFFSET) &
~I2CLCTL_MLCS(0x7)) |
I2CLCTL_MLCS(link->clock_source),
@ -2551,6 +2553,14 @@ static void ssp_acquire_ip(struct dai_intel_ssp *dp)
/* Disable dynamic clock gating before touching any register */
dai_ssp_pm_runtime_dis_ssp_clk_gating(dp, ssp->ssp_index);
#if SSP_IP_VER >= SSP_IP_VER_2_0
/* Switch to selected clock source */
sys_write32((sys_read32(dai_i2svss_base(dp) + I2SLCTL_OFFSET) &
~I2CLCTL_MLCS(0x7)) |
I2CLCTL_MLCS(ssp->link_clock),
dai_i2svss_base(dp) + I2SLCTL_OFFSET);
#endif
}
}
@ -2576,6 +2586,14 @@ static void ssp_release_ip(struct dai_intel_ssp *dp)
dai_ssp_post_stop(dp);
#if SSP_IP_VER >= SSP_IP_VER_2_0
/* Restore default XTAL clock source */
sys_write32((sys_read32(dai_i2svss_base(dp) + I2SLCTL_OFFSET) &
~I2CLCTL_MLCS(0x7)) |
I2CLCTL_MLCS(DAI_INTEL_SSP_CLOCK_XTAL_OSCILLATOR),
dai_i2svss_base(dp) + I2SLCTL_OFFSET);
#endif
dai_ssp_pm_runtime_en_ssp_clk_gating(dp, ssp->ssp_index);
dai_ssp_mclk_disable_unprepare(dp);

1
drivers/dai/intel/ssp/ssp.h
View file

@ -137,6 +137,7 @@ struct dai_intel_ssp_plat_data {
#if SSP_IP_VER > SSP_IP_VER_1_5
uint32_t hdamlssp_base;
uint32_t i2svss_base;
uint32_t link_clock;
#endif
int irq;
const char *irq_name;