ASoC: SOF: mediatek: fix boot sequences

Merge series from Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>:

Changes to DSP_RESET_SW need extra care.

sound/soc/sof/mediatek/mt8195/mt8195-loader.c

@@ -21,7 +21,7 @@ void sof_hifixdsp_boot_sequence(struct snd_sof_dev *sdev, u32 boot_addr)
 
 	/* pull high StatVectorSel to use AltResetVec (set bit4 to 1) */
 	snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW,
-				DSP_RESET_SW, DSP_RESET_SW);
+				STATVECTOR_SEL, STATVECTOR_SEL);
 
 	/* toggle  DReset & BReset */
 	/* pull high DReset & BReset */
@@ -29,6 +29,9 @@ void sof_hifixdsp_boot_sequence(struct snd_sof_dev *sdev, u32 boot_addr)
 				ADSP_BRESET_SW | ADSP_DRESET_SW,
 				ADSP_BRESET_SW | ADSP_DRESET_SW);
 
+	/* delay 10 DSP cycles at 26M about 1us by IP vendor's suggestion */
+	udelay(1);
+
 	/* pull low DReset & BReset */
 	snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW,
 				ADSP_BRESET_SW | ADSP_DRESET_SW,
@@ -46,11 +49,13 @@ void sof_hifixdsp_boot_sequence(struct snd_sof_dev *sdev, u32 boot_addr)
 
 void sof_hifixdsp_shutdown(struct snd_sof_dev *sdev)
 {
-	/* Clear to 0 firstly */
-	snd_sof_dsp_write(sdev, DSP_REG_BAR, DSP_RESET_SW, 0x0);
-
 	/* RUN_STALL pull high again to reset */
 	snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW,
 				ADSP_RUNSTALL, ADSP_RUNSTALL);
+
+	/* pull high DReset & BReset */
+	snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW,
+				ADSP_BRESET_SW | ADSP_DRESET_SW,
+				ADSP_BRESET_SW | ADSP_DRESET_SW);
 }