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Commit c8616671 authored by Stephen Boyd's avatar Stephen Boyd
Browse files

Merge tag 'sunxi-clk-fixes-for-4.9' of... 

Merge tag 'sunxi-clk-fixes-for-4.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into clk-fixes

Pull Allwinner clock fixes from Maxime Ripard:

Two fixes, one for the old clock code, one for the new implementation.

* tag 'sunxi-clk-fixes-for-4.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  clk: sunxi: Fix M factor computation for APB1
  clk: sunxi-ng: sun6i-a31: Force AHB1 clock to use PLL6 as parent
parents bdfdabfe ac95330b

drivers/clk/sunxi-ng/ccu-sun6i-a31.c

+12 −0
Original line number Original line Diff line number Diff line
@@ -191,6 +191,8 @@ static struct clk_div_table axi_div_table[] = { 
static SUNXI_CCU_DIV_TABLE(axi_clk, "axi", "cpu",

static SUNXI_CCU_DIV_TABLE(axi_clk, "axi", "cpu",

			   0x050, 0, 3, axi_div_table, 0);

			   0x050, 0, 3, axi_div_table, 0);





#define SUN6I_A31_AHB1_REG  0x054



static const char * const ahb1_parents[] = { "osc32k", "osc24M",

static const char * const ahb1_parents[] = { "osc32k", "osc24M",

					     "axi", "pll-periph" };

					     "axi", "pll-periph" };
@@ -1230,6 +1232,16 @@ static void __init sun6i_a31_ccu_setup(struct device_node *node) 
	val &= BIT(16);

	val &= BIT(16);

	writel(val, reg + SUN6I_A31_PLL_MIPI_REG);

	writel(val, reg + SUN6I_A31_PLL_MIPI_REG);





	/* Force AHB1 to PLL6 / 3 */

	val = readl(reg + SUN6I_A31_AHB1_REG);

	/* set PLL6 pre-div = 3 */

	val &= ~GENMASK(7, 6);

	val |= 0x2 << 6;

	/* select PLL6 / pre-div */

	val &= ~GENMASK(13, 12);

	val |= 0x3 << 12;

	writel(val, reg + SUN6I_A31_AHB1_REG);



	sunxi_ccu_probe(node, reg, &sun6i_a31_ccu_desc);

	sunxi_ccu_probe(node, reg, &sun6i_a31_ccu_desc);





	ccu_mux_notifier_register(pll_cpu_clk.common.hw.clk,

	ccu_mux_notifier_register(pll_cpu_clk.common.hw.clk,

drivers/clk/sunxi/clk-sunxi.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -373,7 +373,7 @@ static void sun4i_get_apb1_factors(struct factors_request *req) 
	else

	else

		calcp = 3;

		calcp = 3;





	calcm = (req->parent_rate >> calcp) - 1;

	calcm = (div >> calcp) - 1;





	req->rate = (req->parent_rate >> calcp) / (calcm + 1);

	req->rate = (req->parent_rate >> calcp) / (calcm + 1);

	req->m = calcm;

	req->m = calcm;