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MLK-12861-1 ARM: imx: support runtime clock management on i.mx7d when M4 is enabled 

For i.MX7D, current runtime clock management code will skip all
PLL/PFD/GATE enable/disable when M4 is enabled, this is NOT good
for power number in low power idle and audio playback, as M4 only
uses one high speed PFD which is from system PLL, it is never
disabled runtimely, so we can just enable the hardware operation of
PLL/PFD/GATE for A7.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
(cherry picked from commit 02a2e8d73b)
pull/10/head
Anson Huang 2016-05-31 00:34:55 +08:00 committed by Jason Liu
parent 6dd2b11249
commit d774486845
4 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/clk/imx/clk-gate2.c
View File

@ -59,7 +59,7 @@ static void clk_gate2_do_shared_clks(struct clk_hw *hw, bool enable)
{
struct clk_gate2 *gate = to_clk_gate2(hw);
if (imx_src_is_m4_enabled()) {
if (imx_src_is_m4_enabled() && clk_on_imx6sx()) {
#ifdef CONFIG_SOC_IMX6SX
if (!amp_power_mutex || !shared_mem) {
if (enable)

2
drivers/clk/imx/clk-pfd.c
View File

@ -53,7 +53,7 @@ static void clk_pfd_do_shared_clks(struct clk_hw *hw, bool enable)
{
struct clk_pfd *pfd = to_clk_pfd(hw);
if (imx_src_is_m4_enabled()) {
if (imx_src_is_m4_enabled() && clk_on_imx6sx()) {
#ifdef CONFIG_SOC_IMX6SX
if (!amp_power_mutex || !shared_mem) {
if (enable)

2
drivers/clk/imx/clk-pllv3.c
View File

@ -110,7 +110,7 @@ static int clk_pllv3_do_hardware(struct clk_hw *hw, bool enable)
static void clk_pllv3_do_shared_clks(struct clk_hw *hw, bool enable)
{
if (imx_src_is_m4_enabled()) {
if (imx_src_is_m4_enabled() && clk_on_imx6sx()) {
#ifdef CONFIG_SOC_IMX6SX
if (!amp_power_mutex || !shared_mem) {
if (enable)

5
drivers/clk/imx/clk.h
View File

@ -309,4 +309,9 @@ struct clk *imx_clk_cpu(const char *name, const char *parent_name,
int imx_update_shared_mem(struct clk_hw *hw, bool enable);
static inline int clk_on_imx6sx(void)
{
return of_machine_is_compatible("fsl,imx6sx");
}
#endif