lkml.org 
[lkml]   [2016]   [Oct]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 12/23] clk: renesas: r8a7778: Obtain mode pin values using R-Car RST driver
Date
Obtain the values of the mode pins from the R-Car RST driver, which
relies on the presence in DT of a device node for the RESET/WDT module.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
---
v4:
- Add Acked-by,

v3:
- New.
---
drivers/clk/renesas/clk-r8a7778.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/drivers/clk/renesas/clk-r8a7778.c b/drivers/clk/renesas/clk-r8a7778.c
index 40e3a501a50e200f..07ea411098a75ad1 100644
--- a/drivers/clk/renesas/clk-r8a7778.c
+++ b/drivers/clk/renesas/clk-r8a7778.c
@@ -12,6 +12,7 @@
#include <linux/clk/renesas.h>
#include <linux/of_address.h>
#include <linux/slab.h>
+#include <linux/soc/renesas/rcar-rst.h>

struct r8a7778_cpg {
struct clk_onecell_data data;
@@ -83,6 +84,18 @@ static void __init r8a7778_cpg_clocks_init(struct device_node *np)
struct clk **clks;
unsigned int i;
int num_clks;
+ u32 mode;
+
+ if (rcar_rst_read_mode_pins(&mode))
+ return;
+
+ BUG_ON(!(mode & BIT(19)));
+
+ cpg_mode_rates = (!!(mode & BIT(18)) << 2) |
+ (!!(mode & BIT(12)) << 1) |
+ (!!(mode & BIT(11)));
+ cpg_mode_divs = (!!(mode & BIT(2)) << 1) |
+ (!!(mode & BIT(1)));

num_clks = of_property_count_strings(np, "clock-output-names");
if (num_clks < 0) {
--
1.9.1
\
 
 \ /
  Last update: 2016-10-21 15:18    [W:0.262 / U:0.376 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site