clk: meson: g12a: set CLK_MUX_ROUND_CLOSEST on the cpu clock muxes

When setting the 100MHz, 500MHz, 666MHz and 1GHz rate for CPU clocks,
CCF will use the SYS_PLL to handle these frequencies, but:
- using FIXED_PLL derived FCLK_DIV2/DIV3 clocks is more precise
- the Amlogic G12A/G12B/SM1 Suspend handling in firmware doesn't
  handle entering suspend using SYS_PLL for these frequencies

Adding CLK_MUX_ROUND_CLOSEST on all the muxes of the non-SYS_PLL
cpu clock tree helps CCF always selecting the FCLK_DIV2/DIV3 as source
for these frequencies.

Fixes: 55012f8f8ade ("clk: meson: g12a: add notifiers to handle cpu clock change")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

diff --git a/drivers/clk/meson/g12a.c b/drivers/clk/meson/g12a.c
index 33c7e04b4a82b4074cd3a02278316a0054357938..b3af61cc6fb9497059aefa08e015e95c470ea294 100644 (file)
--- a/drivers/clk/meson/g12a.c
+++ b/drivers/clk/meson/g12a.c
@@ -343,6 +343,7 @@ static struct clk_regmap g12a_cpu_clk_premux0 = {
                .offset = HHI_SYS_CPU_CLK_CNTL0,
                .mask = 0x3,
                .shift = 0,
+               .flags = CLK_MUX_ROUND_CLOSEST,
        },
        .hw.init = &(struct clk_init_data){
                .name = "cpu_clk_dyn0_sel",
@@ -409,6 +410,7 @@ static struct clk_regmap g12a_cpu_clk_postmux0 = {
                .offset = HHI_SYS_CPU_CLK_CNTL0,
                .mask = 0x1,
                .shift = 2,
+               .flags = CLK_MUX_ROUND_CLOSEST,
        },
        .hw.init = &(struct clk_init_data){
                .name = "cpu_clk_dyn0",
@@ -465,6 +467,7 @@ static struct clk_regmap g12a_cpu_clk_dyn = {
                .offset = HHI_SYS_CPU_CLK_CNTL0,
                .mask = 0x1,
                .shift = 10,
+               .flags = CLK_MUX_ROUND_CLOSEST,
        },
        .hw.init = &(struct clk_init_data){
                .name = "cpu_clk_dyn",
@@ -484,6 +487,7 @@ static struct clk_regmap g12a_cpu_clk = {
                .offset = HHI_SYS_CPU_CLK_CNTL0,
                .mask = 0x1,
                .shift = 11,
+               .flags = CLK_MUX_ROUND_CLOSEST,
        },
        .hw.init = &(struct clk_init_data){
                .name = "cpu_clk",
@@ -503,6 +507,7 @@ static struct clk_regmap g12b_cpu_clk = {
                .offset = HHI_SYS_CPU_CLK_CNTL0,
                .mask = 0x1,
                .shift = 11,
+               .flags = CLK_MUX_ROUND_CLOSEST,
        },
        .hw.init = &(struct clk_init_data){
                .name = "cpu_clk",
@@ -522,6 +527,7 @@ static struct clk_regmap g12b_cpub_clk_premux0 = {
                .offset = HHI_SYS_CPUB_CLK_CNTL,
                .mask = 0x3,
                .shift = 0,
+               .flags = CLK_MUX_ROUND_CLOSEST,
        },
        .hw.init = &(struct clk_init_data){
                .name = "cpub_clk_dyn0_sel",
@@ -567,6 +573,7 @@ static struct clk_regmap g12b_cpub_clk_postmux0 = {
                .offset = HHI_SYS_CPUB_CLK_CNTL,
                .mask = 0x1,
                .shift = 2,
+               .flags = CLK_MUX_ROUND_CLOSEST,
        },
        .hw.init = &(struct clk_init_data){
                .name = "cpub_clk_dyn0",
@@ -644,6 +651,7 @@ static struct clk_regmap g12b_cpub_clk_dyn = {
                .offset = HHI_SYS_CPUB_CLK_CNTL,
                .mask = 0x1,
                .shift = 10,
+               .flags = CLK_MUX_ROUND_CLOSEST,
        },
        .hw.init = &(struct clk_init_data){
                .name = "cpub_clk_dyn",
@@ -663,6 +671,7 @@ static struct clk_regmap g12b_cpub_clk = {
                .offset = HHI_SYS_CPUB_CLK_CNTL,
                .mask = 0x1,
                .shift = 11,
+               .flags = CLK_MUX_ROUND_CLOSEST,
        },
        .hw.init = &(struct clk_init_data){
                .name = "cpub_clk",