diff options
Diffstat (limited to 'target/linux/pistachio/patches-4.9/108-clk-pistachio-Fix-wrong-SDHost-card-speed.patch')
| -rw-r--r-- | target/linux/pistachio/patches-4.9/108-clk-pistachio-Fix-wrong-SDHost-card-speed.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/target/linux/pistachio/patches-4.9/108-clk-pistachio-Fix-wrong-SDHost-card-speed.patch b/target/linux/pistachio/patches-4.9/108-clk-pistachio-Fix-wrong-SDHost-card-speed.patch new file mode 100644 index 0000000000..da2a873e61 --- /dev/null +++ b/target/linux/pistachio/patches-4.9/108-clk-pistachio-Fix-wrong-SDHost-card-speed.patch @@ -0,0 +1,56 @@ +From 3642843a06025ec333d7e92580cf52cb8db2a652 Mon Sep 17 00:00:00 2001 +From: Govindraj Raja <Govindraj.Raja@imgtec.com> +Date: Fri, 8 Jan 2016 16:36:07 +0000 +Subject: clk: pistachio: Fix wrong SDHost card speed + +The SDHost currently clocks the card 4x slower than it +should do, because there is fixed divide by 4 in the +sdhost wrapper that is not present in the clock tree. +To model this add a fixed divide by 4 clock node in +the SDHost clock path. + +This will ensure the right clock frequency is selected when +the mmc driver tries to configure frequency on card insert. + +Signed-off-by: Govindraj Raja <Govindraj.Raja@imgtec.com> +--- + drivers/clk/pistachio/clk-pistachio.c | 3 ++- + include/dt-bindings/clock/pistachio-clk.h | 1 + + 2 files changed, 3 insertions(+), 1 deletion(-) + +diff --git a/drivers/clk/pistachio/clk-pistachio.c b/drivers/clk/pistachio/clk-pistachio.c +index c4ceb5e..1c968d9 100644 +--- a/drivers/clk/pistachio/clk-pistachio.c ++++ b/drivers/clk/pistachio/clk-pistachio.c +@@ -44,7 +44,7 @@ static struct pistachio_gate pistachio_gates[] __initdata = { + GATE(CLK_AUX_ADC_INTERNAL, "aux_adc_internal", "sys_internal_div", + 0x104, 22), + GATE(CLK_AUX_ADC, "aux_adc", "aux_adc_div", 0x104, 23), +- GATE(CLK_SD_HOST, "sd_host", "sd_host_div", 0x104, 24), ++ GATE(CLK_SD_HOST, "sd_host", "sd_host_div4", 0x104, 24), + GATE(CLK_BT, "bt", "bt_div", 0x104, 25), + GATE(CLK_BT_DIV4, "bt_div4", "bt_div4_div", 0x104, 26), + GATE(CLK_BT_DIV8, "bt_div8", "bt_div8_div", 0x104, 27), +@@ -54,6 +54,7 @@ static struct pistachio_gate pistachio_gates[] __initdata = { + static struct pistachio_fixed_factor pistachio_ffs[] __initdata = { + FIXED_FACTOR(CLK_WIFI_DIV4, "wifi_div4", "wifi_pll", 4), + FIXED_FACTOR(CLK_WIFI_DIV8, "wifi_div8", "wifi_pll", 8), ++ FIXED_FACTOR(CLK_SDHOST_DIV4, "sd_host_div4", "sd_host_div", 4), + }; + + static struct pistachio_div pistachio_divs[] __initdata = { +diff --git a/include/dt-bindings/clock/pistachio-clk.h b/include/dt-bindings/clock/pistachio-clk.h +index 039f83f..77b92ae 100644 +--- a/include/dt-bindings/clock/pistachio-clk.h ++++ b/include/dt-bindings/clock/pistachio-clk.h +@@ -21,6 +21,7 @@ + /* Fixed-factor clocks */ + #define CLK_WIFI_DIV4 16 + #define CLK_WIFI_DIV8 17 ++#define CLK_SDHOST_DIV4 18 + + /* Gate clocks */ + #define CLK_MIPS 32 +-- +2.7.4 + |