From: Kursad Oney kursad.oney@broadcom.com
The Broadcom ARM implementations do not yet have a clock framework so one can use a fixed clock as the root clock of the hsspi block. The fixed clock does not have an "enable" routine, since it's always enabled. So when we hit this issue, getting an ENOSYS return, do not bail but continue initialization.
Similarly the block might already have been out of reset, say, when we are booting from a SPI device. So if the reset signal is not configured in the device tree, do not bail out and instead skip deasserting the reset.
Signed-off-by: Kursad Oney kursad.oney@broadcom.com Reviewed-by: Philippe Reynes philippe.reynes@softathome.com --- drivers/spi/bcm63xx_hsspi.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-)
diff --git a/drivers/spi/bcm63xx_hsspi.c b/drivers/spi/bcm63xx_hsspi.c index 7306531..e82b80c 100644 --- a/drivers/spi/bcm63xx_hsspi.c +++ b/drivers/spi/bcm63xx_hsspi.c @@ -349,32 +349,31 @@ static int bcm63xx_hsspi_probe(struct udevice *dev) return ret;
ret = clk_enable(&clk); - if (ret < 0) + if (ret < 0 && ret != -ENOSYS) return ret;
ret = clk_free(&clk); - if (ret < 0) + if (ret < 0 && ret != -ENOSYS) return ret;
/* get clock rate */ ret = clk_get_by_name(dev, "pll", &clk); - if (ret < 0) + if (ret < 0 && ret != -ENOSYS) return ret;
priv->clk_rate = clk_get_rate(&clk);
ret = clk_free(&clk); - if (ret < 0) + if (ret < 0 && ret != -ENOSYS) return ret;
/* perform reset */ ret = reset_get_by_index(dev, 0, &rst_ctl); - if (ret < 0) - return ret; - - ret = reset_deassert(&rst_ctl); - if (ret < 0) - return ret; + if (ret >= 0) { + ret = reset_deassert(&rst_ctl); + if (ret < 0) + return ret; + }
ret = reset_free(&rst_ctl); if (ret < 0)