From 578d601cbc514b92bc9ed71fd4fb700180275211 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 1 Jun 2016 14:46:01 +0200 Subject: [PATCH] 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 Acked-by: Dirk Behme --- 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 40e3a50..07ea411 100644 --- a/drivers/clk/renesas/clk-r8a7778.c +++ b/drivers/clk/renesas/clk-r8a7778.c @@ -12,6 +12,7 @@ #include #include #include +#include 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) { -- 2.7.4