diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2016-06-01 14:46:01 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2016-11-02 20:43:42 +0100 |
| commit | 578d601cbc514b92bc9ed71fd4fb700180275211 (patch) | |
| tree | 418bc0936afdecd81c6719814329cb10e297e920 /drivers/clk/renesas | |
| parent | 65f922c78f9693c037905f00785033aefd97df47 (diff) | |
| download | blackbird-op-linux-578d601cbc514b92bc9ed71fd4fb700180275211.tar.gz blackbird-op-linux-578d601cbc514b92bc9ed71fd4fb700180275211.zip | |
clk: renesas: r8a7778: Obtain mode pin values using R-Car RST driver
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>
Diffstat (limited to 'drivers/clk/renesas')
| -rw-r--r-- | drivers/clk/renesas/clk-r8a7778.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/clk/renesas/clk-r8a7778.c b/drivers/clk/renesas/clk-r8a7778.c index 40e3a501a50e..07ea411098a7 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) { |
