Set the FSI bus frequency based on the value encoded in the
devicetree. The default value is 166MHz, which is the highest
frequency some FSI slaves can accept.
Signed-off-by: Eddie James <eajames@xxxxxxxxxxxxx>
Reviewed-by: Joel Stanley <joel@xxxxxxxxx>
---
drivers/fsi/fsi-master-aspeed.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/fsi/fsi-master-aspeed.c b/drivers/fsi/fsi-master-aspeed.c
index c006ec008a1a..be19fee0bece 100644
--- a/drivers/fsi/fsi-master-aspeed.c
+++ b/drivers/fsi/fsi-master-aspeed.c
@@ -515,6 +515,7 @@ static int fsi_master_aspeed_probe(struct platform_device *pdev)
struct fsi_master_aspeed *aspeed;
struct resource *res;
int rc, links, reg;
+ u32 bus_freq = 166666666;
__be32 raw;
rc = tacoma_cabled_fsi_fixup(&pdev->dev);
@@ -539,6 +540,10 @@ static int fsi_master_aspeed_probe(struct platform_device *pdev)
dev_err(aspeed->dev, "couldn't get clock\n");
return PTR_ERR(aspeed->clk);
}
+
+ of_property_read_u32(pdev->dev.of_node, "bus-frequency", &bus_freq);
+ clk_set_rate(aspeed->clk, bus_freq);
+
rc = clk_prepare_enable(aspeed->clk);
if (rc) {
dev_err(aspeed->dev, "couldn't enable clock\n");
--
2.26.2
