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FMC ADC 100M 14b 4cha
Commit 49ad7886 authored by Federico Vaga's avatar Federico Vaga
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sw:drv initialize the clock before anything else 

Some registers needs the clock to be enabled before being used.
We saw this with the calibration BUSY bit.
Signed-off-by: Federico Vaga's avatarFederico Vaga <federico.vaga@cern.ch>
Signed-off-by: Tristan Gingold's avatarTristan Gingold <tristan.gingold@cern.ch>
parent eb15f5a9
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Showing with 13 additions and 2 deletions
software/kernel/fa-core.c
View file @ 49ad7886
......@@ -481,6 +481,16 @@ static void fa_init_timetag(struct fa_dev *fa)
(seconds >> 00) & 0xFFFFFFFF);
}
static void fa_clock_enable(struct fa_dev *fa)
{
fa_writel(fa, fa->fa_adc_csr_base, &zfad_regs[ZFA_CTL_CLK_EN], 1);
}
static void fa_clock_disable(struct fa_dev *fa)
{
fa_writel(fa, fa->fa_adc_csr_base, &zfad_regs[ZFA_CTL_CLK_EN], 0);
}
/*
* Specific check and init
*/
......@@ -511,8 +521,6 @@ static int __fa_init(struct fa_dev *fa)
}
fa_calib_config(fa);
/* Enable mezzanine clock */
fa_writel(fa, fa->fa_adc_csr_base, &zfad_regs[ZFA_CTL_CLK_EN], 1);
/* Set decimation to minimum */
fa_writel(fa, fa->fa_adc_csr_base, &zfad_regs[ZFAT_SR_UNDER], 1);
/* Set test data register */
......@@ -715,6 +723,7 @@ int fa_probe(struct platform_device *pdev)
if (err)
goto out_dma;
fa_clock_enable(fa);
err = fa_adc_wait_serdes_ready(fa, msecs_to_jiffies(10));
if (err)
......@@ -748,6 +757,7 @@ out:
m->exit(fa);
iounmap(fa->fa_top_level);
out_serdes:
fa_clock_disable(fa);
fa_dma_release_channel(fa);
out_dma:
out_fmc_err:
......@@ -776,6 +786,7 @@ int fa_remove(struct platform_device *pdev)
if (m->exit)
m->exit(fa);
}
fa_clock_disable(fa);
fa_dma_release_channel(fa);
iounmap(fa->fa_top_level);
......
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