ASoC: rt5677: Wait for DSP to boot before loading firmware (9da776ba) · Commits · 戴 / test

Wait for hardware to startup. If we load before hardware is ready we could end up corrupting the firmware. Signed-off-by:

sound/soc/codecs/rt5677.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -892,6 +892,7 @@ static void rt5677_dsp_work(struct work_struct *work)
		container_of(work, struct rt5677_priv, dsp_work.work);
		static bool activity;
		bool enable = rt5677->dsp_vad_en;
		int i, val;


		dev_info(rt5677->component->dev, "DSP VAD: enable=%d, activity=%d\n",
		@@ -913,6 +914,18 @@ static void rt5677_dsp_work(struct work_struct *work)
		rt5677_set_vad_source(rt5677);
		rt5677_set_dsp_mode(rt5677, true);

		#define RT5677_BOOT_RETRY 20
		for (i = 0; i < RT5677_BOOT_RETRY; i++) {
		regmap_read(rt5677->regmap, RT5677_PWR_DSP_ST, &val);
		if (val == 0x3ff)
		break;
		udelay(500);
		}
		if (i == RT5677_BOOT_RETRY && val != 0x3ff) {
		dev_err(rt5677->component->dev, "DSP Boot Timed Out!");
		return;
		}

		/* Boot the firmware from IRAM instead of SRAM0. */
		rt5677_dsp_mode_i2c_write_addr(rt5677, RT5677_DSP_BOOT_VECTOR,
		0x0009, 0x0003);