openwrtv4/target/linux/brcm63xx/patches-4.9/001-4.12-04-spi-bcm63xx-hsspi-allow-providing-clock-rate-through.patch
Jonas Gorski b0c5e8b927 brcm63xx: add kernel 4.9 support
Add support for kernel 4.9 based on the more upstream comformant
partition defintions. Increases compressed kernel size by ~95k
compared to 4.4.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
2018-02-11 23:15:05 +01:00

35 lines
1,015 B
Diff

From d03f23df6ff47898d76f06b3aa5dadcfa1ec8f4f Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@gmail.com>
Date: Sun, 19 Feb 2017 23:40:22 +0100
Subject: [PATCH 1/3] spi/bcm63xx-hsspi: allow providing clock rate through a
second clock
Instead of requiring the hsspi clock to have a rate, allow using a second
clock for providing the Hz rate, which is probably more correct anyway.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
drivers/spi/spi-bcm63xx-hsspi.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
--- a/drivers/spi/spi-bcm63xx-hsspi.c
+++ b/drivers/spi/spi-bcm63xx-hsspi.c
@@ -351,8 +351,16 @@ static int bcm63xx_hsspi_probe(struct pl
return PTR_ERR(clk);
rate = clk_get_rate(clk);
- if (!rate)
- return -EINVAL;
+ if (!rate) {
+ struct clk *pll_clk = devm_clk_get(dev, "pll");
+
+ if (IS_ERR(pll_clk))
+ return PTR_ERR(pll_clk);
+
+ rate = clk_get_rate(pll_clk);
+ if (!rate)
+ return -EINVAL;
+ }
ret = clk_prepare_enable(clk);
if (ret)