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clk: rockchip: Add support for multiple clock providers

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There are need to support Multi-CRUs probability in future, but
it is not supported on the current Rockchip Clock Framework.

Therefore, this patch add support a provider as the parameter
handler when we call the clock register functions for per CRU.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Xing Zheng
2016-03-09 10:37:04 +08:00
committed by Heiko Stuebner
parent 268aebaa24
commit ef1d9feecc
8 changed files with 229 additions and 118 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
drivers/clk/rockchip/clk-rk3188.c
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@@ -759,57 +759,74 @@ static const char *const rk3188_critical_clocks[] __initconst = {
"hclk_cpubus"
};
static void __init rk3188_common_clk_init(struct device_node *np)
static struct rockchip_clk_provider *__init rk3188_common_clk_init(struct device_node *np)
{
struct rockchip_clk_provider *ctx;
void __iomem *reg_base;
reg_base = of_iomap(np, 0);
if (!reg_base) {
pr_err("%s: could not map cru region\n", __func__);
return;
return ERR_PTR(-ENOMEM);
}
rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
ctx = rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
if (IS_ERR(ctx)) {
pr_err("%s: rockchip clk init failed\n", __func__);
return ERR_PTR(-ENOMEM);
}
rockchip_clk_register_branches(common_clk_branches,
rockchip_clk_register_branches(ctx, common_clk_branches,
ARRAY_SIZE(common_clk_branches));
rockchip_register_softrst(np, 9, reg_base + RK2928_SOFTRST_CON(0),
ROCKCHIP_SOFTRST_HIWORD_MASK);
rockchip_register_restart_notifier(RK2928_GLB_SRST_FST, NULL);
rockchip_register_restart_notifier(ctx, RK2928_GLB_SRST_FST, NULL);
return ctx;
}
static void __init rk3066a_clk_init(struct device_node *np)
{
rk3188_common_clk_init(np);
rockchip_clk_register_plls(rk3066_pll_clks,
struct rockchip_clk_provider *ctx;
ctx = rk3188_common_clk_init(np);
if (IS_ERR(ctx))
return;
rockchip_clk_register_plls(ctx, rk3066_pll_clks,
ARRAY_SIZE(rk3066_pll_clks),
RK3066_GRF_SOC_STATUS);
rockchip_clk_register_branches(rk3066a_clk_branches,
rockchip_clk_register_branches(ctx, rk3066a_clk_branches,
ARRAY_SIZE(rk3066a_clk_branches));
rockchip_clk_register_armclk(ARMCLK, "armclk",
rockchip_clk_register_armclk(ctx, ARMCLK, "armclk",
mux_armclk_p, ARRAY_SIZE(mux_armclk_p),
&rk3066_cpuclk_data, rk3066_cpuclk_rates,
ARRAY_SIZE(rk3066_cpuclk_rates));
rockchip_clk_protect_critical(rk3188_critical_clocks,
ARRAY_SIZE(rk3188_critical_clocks));
rockchip_clk_of_add_provider(np, ctx);
}
CLK_OF_DECLARE(rk3066a_cru, "rockchip,rk3066a-cru", rk3066a_clk_init);
static void __init rk3188a_clk_init(struct device_node *np)
{
struct rockchip_clk_provider *ctx;
struct clk *clk1, *clk2;
unsigned long rate;
int ret;
rk3188_common_clk_init(np);
rockchip_clk_register_plls(rk3188_pll_clks,
ctx = rk3188_common_clk_init(np);
if (IS_ERR(ctx))
return;
rockchip_clk_register_plls(ctx, rk3188_pll_clks,
ARRAY_SIZE(rk3188_pll_clks),
RK3188_GRF_SOC_STATUS);
rockchip_clk_register_branches(rk3188_clk_branches,
rockchip_clk_register_branches(ctx, rk3188_clk_branches,
ARRAY_SIZE(rk3188_clk_branches));
rockchip_clk_register_armclk(ARMCLK, "armclk",
rockchip_clk_register_armclk(ctx, ARMCLK, "armclk",
mux_armclk_p, ARRAY_SIZE(mux_armclk_p),
&rk3188_cpuclk_data, rk3188_cpuclk_rates,
ARRAY_SIZE(rk3188_cpuclk_rates));
@@ -833,6 +850,7 @@ static void __init rk3188a_clk_init(struct device_node *np)
rockchip_clk_protect_critical(rk3188_critical_clocks,
ARRAY_SIZE(rk3188_critical_clocks));
rockchip_clk_of_add_provider(np, ctx);
}
CLK_OF_DECLARE(rk3188a_cru, "rockchip,rk3188a-cru", rk3188a_clk_init);