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authorKevin Hilman <khilman@baylibre.com>2016-04-22 09:58:48 -0700
committerKevin Hilman <khilman@baylibre.com>2016-04-22 09:58:48 -0700
commitc95e2e7eddfa571dccc8cfe645c790ff7fb7e2e0 (patch)
tree3465fe0741fc1272af304ef2172e66e9a9f6c6eb /arch/arm
parentc0e309138be2e4ba1551dde76f7fa2479cd9198d (diff)
parentc531fb27e9699eaee478ee5686a3cca5dee73602 (diff)
downloadleg-kernel-c95e2e7eddfa571dccc8cfe645c790ff7fb7e2e0.tar.gz
Merge tag 'renesas-fixes-for-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes
Merge "Renesas ARM Based SoC Fixes for v4.6" from Simon Horman: Renesas ARM Based SoC Fixes for v4.6 * Correct preset_lpj calculation which may lead to too short delays * Correct handling of optional clocks on r8a7791 to restore access to the serial port the porter board * tag 'renesas-fixes-for-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: ARM: shmobile: timer: Fix preset_lpj leading to too short delays Revert "ARM: dts: porter: Enable SCIF_CLK frequency and pins" ARM: dts: r8a7791: Don't disable referenced optional clocks
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/boot/dts/r8a7791-koelsch.dts1
-rw-r--r--arch/arm/boot/dts/r8a7791-porter.dts14
-rw-r--r--arch/arm/boot/dts/r8a7791.dtsi5
-rw-r--r--arch/arm/mach-shmobile/timer.c28
4 files changed, 14 insertions, 34 deletions
diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts
index 0ad71b81d3a2..cc6e28f81fe4 100644
--- a/arch/arm/boot/dts/r8a7791-koelsch.dts
+++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
@@ -661,6 +661,7 @@
};
&pcie_bus_clk {
+ clock-frequency = <100000000>;
status = "okay";
};
diff --git a/arch/arm/boot/dts/r8a7791-porter.dts b/arch/arm/boot/dts/r8a7791-porter.dts
index 6c08314427d6..a9285d9a57cd 100644
--- a/arch/arm/boot/dts/r8a7791-porter.dts
+++ b/arch/arm/boot/dts/r8a7791-porter.dts
@@ -143,19 +143,11 @@
};
&pfc {
- pinctrl-0 = <&scif_clk_pins>;
- pinctrl-names = "default";
-
scif0_pins: serial0 {
renesas,groups = "scif0_data_d";
renesas,function = "scif0";
};
- scif_clk_pins: scif_clk {
- renesas,groups = "scif_clk";
- renesas,function = "scif_clk";
- };
-
ether_pins: ether {
renesas,groups = "eth_link", "eth_mdio", "eth_rmii";
renesas,function = "eth";
@@ -229,11 +221,6 @@
status = "okay";
};
-&scif_clk {
- clock-frequency = <14745600>;
- status = "okay";
-};
-
&ether {
pinctrl-0 = <&ether_pins &phy1_pins>;
pinctrl-names = "default";
@@ -414,6 +401,7 @@
};
&pcie_bus_clk {
+ clock-frequency = <100000000>;
status = "okay";
};
diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi
index 6439f0569fe2..1cd1b6a3a72a 100644
--- a/arch/arm/boot/dts/r8a7791.dtsi
+++ b/arch/arm/boot/dts/r8a7791.dtsi
@@ -1083,9 +1083,8 @@
pcie_bus_clk: pcie_bus_clk {
compatible = "fixed-clock";
#clock-cells = <0>;
- clock-frequency = <100000000>;
+ clock-frequency = <0>;
clock-output-names = "pcie_bus";
- status = "disabled";
};
/* External SCIF clock */
@@ -1094,7 +1093,6 @@
#clock-cells = <0>;
/* This value must be overridden by the board. */
clock-frequency = <0>;
- status = "disabled";
};
/* External USB clock - can be overridden by the board */
@@ -1112,7 +1110,6 @@
/* This value must be overridden by the board. */
clock-frequency = <0>;
clock-output-names = "can_clk";
- status = "disabled";
};
/* Special CPG clocks */
diff --git a/arch/arm/mach-shmobile/timer.c b/arch/arm/mach-shmobile/timer.c
index ad008e4b0c49..67d79f9c6bad 100644
--- a/arch/arm/mach-shmobile/timer.c
+++ b/arch/arm/mach-shmobile/timer.c
@@ -40,8 +40,7 @@ static void __init shmobile_setup_delay_hz(unsigned int max_cpu_core_hz,
void __init shmobile_init_delay(void)
{
struct device_node *np, *cpus;
- bool is_a7_a8_a9 = false;
- bool is_a15 = false;
+ unsigned int div = 0;
bool has_arch_timer = false;
u32 max_freq = 0;
@@ -55,27 +54,22 @@ void __init shmobile_init_delay(void)
if (!of_property_read_u32(np, "clock-frequency", &freq))
max_freq = max(max_freq, freq);
- if (of_device_is_compatible(np, "arm,cortex-a8") ||
- of_device_is_compatible(np, "arm,cortex-a9")) {
- is_a7_a8_a9 = true;
- } else if (of_device_is_compatible(np, "arm,cortex-a7")) {
- is_a7_a8_a9 = true;
- has_arch_timer = true;
- } else if (of_device_is_compatible(np, "arm,cortex-a15")) {
- is_a15 = true;
+ if (of_device_is_compatible(np, "arm,cortex-a8")) {
+ div = 2;
+ } else if (of_device_is_compatible(np, "arm,cortex-a9")) {
+ div = 1;
+ } else if (of_device_is_compatible(np, "arm,cortex-a7") ||
+ of_device_is_compatible(np, "arm,cortex-a15")) {
+ div = 1;
has_arch_timer = true;
}
}
of_node_put(cpus);
- if (!max_freq)
+ if (!max_freq || !div)
return;
- if (!has_arch_timer || !IS_ENABLED(CONFIG_ARM_ARCH_TIMER)) {
- if (is_a7_a8_a9)
- shmobile_setup_delay_hz(max_freq, 1, 3);
- else if (is_a15)
- shmobile_setup_delay_hz(max_freq, 2, 4);
- }
+ if (!has_arch_timer || !IS_ENABLED(CONFIG_ARM_ARCH_TIMER))
+ shmobile_setup_delay_hz(max_freq, 1, div);
}