Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-05 03:21:32 +00:00
Code Issues Packages Projects Releases Wiki Activity

SOCFPGA fixes for 3.18

Browse Source 
These patches fixes an SMP and SDMMC driver hang during boot up on the
 SOCFPGA platform.
 
 Patch "arm: socfpga: fix fetching cpu1start_addr for SMP" fixes the SMP
 trampoline code in order for CPU1 to correctly fetch it's cpu1start_addr.
 
 Patch "ARM: dts: socfpga: rename gpio nodes" renames that GPIO node in order
 to allow a standard way of specifying status="okay" in the board DTS file.
 
 Patch "ARM: dts: socfpga: Fix SD card detect" fixes a SDMMC driver hang
 during boot. The reason for the hang was the deferred probe of the SDMMC
 driver was waiting for the GPIO resource that would never come.
 
 Patch "ARM: dts: socfpga: Add a 3.3V fixed regulator node" adds a fixed
 regulator node for the SDMMC driver to use.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJUSGUtAAoJEBmUBAuBoyj07SIP/j+JNckow7WoAU+W3QwOE2ew
 BvpLFffIolj6bngLbb/JU0La2TgDbtifPvcNdSYVYfF7u2NxsyTKx1mMyWYVhAmq
 JXaD6ZbteHMIps9SRUTrSOHSA8VYq/gV7IPAT0K8VS1RD9jDarwhJwhQfdZ0tLDY
 foB4Nky6CZ+jgK9P4GCTrXH2VOvF2bpfR7G0woLkXmuQ97yOA0ddUl8vIDAlQweW
 wjBZkRC7Vinpq1a1PmcRvAbkV7f+ELzbKMdY8TYvHPGE9+76Ak8/UkRh46LXyWo5
 GyEknDZaVNggl70Ex7owDdGklFBJLUKIIRR9KmG6OGdQ74hRZD2ASk5U58fVFdNr
 YHA7dyx5Qk+8XXFWq+rgXeGCpwngznH38IpI/dAVMc5IhpTUDCEcLfNrmX8xSZr9
 5oul3t2E3zVXoFI4Qj+OaHTH/8nDP8rrYb4lgLmsLBIBDlrK7YDcO8+rKHpI+qQN
 mjPHtNPXe1T5D+WAfPAxf5zzOfKwqO4BvWqFD3403gPR1cJid4WclCKlieFpeV+a
 HapULcQvKBrVhoc3vFrXCIzfLddIJHJYTNco0wQOzwb/Bk/vTuEc8teAohj/AHg2
 YSOkiFOvmkas7I+TAzXsnGgTIQz9KHOteH700gNAAILTO9Wj9PVazeGreRKZX4YZ
 hkvDbEUMaOvrGzih+Xq6
 =y6Ws
 -----END PGP SIGNATURE-----

Merge tag 'socfpga_fixes_for_3.18' of git://git.rocketboards.org/linux-socfpga-next into fixes

Merge "SOCFPGA fixes for 3.18" from Dinh Nguyen:

These patches fixes an SMP and SDMMC driver hang during boot up on the
SOCFPGA platform.

Patch "arm: socfpga: fix fetching cpu1start_addr for SMP" fixes the SMP
trampoline code in order for CPU1 to correctly fetch it's cpu1start_addr.

Patch "ARM: dts: socfpga: rename gpio nodes" renames that GPIO node in order
to allow a standard way of specifying status="okay" in the board DTS file.

Patch "ARM: dts: socfpga: Fix SD card detect" fixes a SDMMC driver hang
during boot. The reason for the hang was the deferred probe of the SDMMC
driver was waiting for the GPIO resource that would never come.

Patch "ARM: dts: socfpga: Add a 3.3V fixed regulator node" adds a fixed
regulator node for the SDMMC driver to use.

* tag 'socfpga_fixes_for_3.18' of git://git.rocketboards.org/linux-socfpga-next:
  ARM: dts: socfpga: Add a 3.3V fixed regulator node
  ARM: dts: socfpga: Fix SD card detect
  ARM: dts: socfpga: rename gpio nodes
  arm: socfpga: fix fetching cpu1start_addr for SMP

Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Olof Johansson 2014-10-23 21:05:45 -07:00
commit 4fbc400cfc
9 changed files with 65 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
arch/arm/boot/dts/socfpga.dtsi
View File

@ -547,7 +547,7 @@
status = "disabled";
};
gpio@ff708000 {
gpio0: gpio@ff708000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "snps,dw-apb-gpio";
@ -555,7 +555,7 @@
clocks = <&per_base_clk>;
status = "disabled";
gpio0: gpio-controller@0 {
porta: gpio-controller@0 {
compatible = "snps,dw-apb-gpio-port";
gpio-controller;
#gpio-cells = <2>;
@ -567,7 +567,7 @@
};
};
gpio@ff709000 {
gpio1: gpio@ff709000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "snps,dw-apb-gpio";
@ -575,7 +575,7 @@
clocks = <&per_base_clk>;
status = "disabled";
gpio1: gpio-controller@0 {
portb: gpio-controller@0 {
compatible = "snps,dw-apb-gpio-port";
gpio-controller;
#gpio-cells = <2>;
@ -587,7 +587,7 @@
};
};
gpio@ff70a000 {
gpio2: gpio@ff70a000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "snps,dw-apb-gpio";
@ -595,7 +595,7 @@
clocks = <&per_base_clk>;
status = "disabled";
gpio2: gpio-controller@0 {
portc: gpio-controller@0 {
compatible = "snps,dw-apb-gpio-port";
gpio-controller;
#gpio-cells = <2>;

2
arch/arm/boot/dts/socfpga_arria5.dtsi
View File

@ -29,7 +29,7 @@
};
};
dwmmc0@ff704000 {
mmc0: dwmmc0@ff704000 {
num-slots = <1>;
broken-cd;
bus-width = <4>;

12
arch/arm/boot/dts/socfpga_arria5_socdk.dts
View File

@ -37,6 +37,13 @@
*/
ethernet0 = &gmac1;
};
regulator_3_3v: 3-3-v-regulator {
compatible = "regulator-fixed";
regulator-name = "3.3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
};
&gmac1 {
@ -68,6 +75,11 @@
};
};
&mmc0 {
vmmc-supply = <&regulator_3_3v>;
vqmmc-supply = <&regulator_3_3v>;
};
&usb1 {
status = "okay";
};

15
arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
View File

@ -37,6 +37,13 @@
*/
ethernet0 = &gmac1;
};
regulator_3_3v: 3-3-v-regulator {
compatible = "regulator-fixed";
regulator-name = "3.3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
};
&gmac1 {
@ -53,6 +60,10 @@
rxc-skew-ps = <2000>;
};
&gpio1 {
status = "okay";
};
&i2c0 {
status = "okay";
@ -69,7 +80,9 @@
};
&mmc0 {
cd-gpios = <&gpio1 18 0>;
cd-gpios = <&portb 18 0>;
vmmc-supply = <&regulator_3_3v>;
vqmmc-supply = <&regulator_3_3v>;
};
&usb1 {

12
arch/arm/boot/dts/socfpga_cyclone5_sockit.dts
View File

@ -37,6 +37,13 @@
*/
ethernet0 = &gmac1;
};
regulator_3_3v: vcc3p3-regulator {
compatible = "regulator-fixed";
regulator-name = "VCC3P3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
};
&gmac1 {
@ -53,6 +60,11 @@
rxc-skew-ps = <2000>;
};
&mmc0 {
vmmc-supply = <&regulator_3_3v>;
vqmmc-supply = <&regulator_3_3v>;
};
&usb1 {
status = "okay";
};

2
arch/arm/mach-socfpga/core.h
View File

@ -40,7 +40,7 @@ extern void __iomem *rst_manager_base_addr;
extern struct smp_operations socfpga_smp_ops;
extern char secondary_trampoline, secondary_trampoline_end;
extern unsigned long cpu1start_addr;
extern unsigned long socfpga_cpu1start_addr;
#define SOCFPGA_SCU_VIRT_BASE 0xfffec000

25
arch/arm/mach-socfpga/headsmp.S
View File

@ -9,21 +9,26 @@
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/memory.h>
.arch armv7-a
ENTRY(secondary_trampoline)
movw r2, #:lower16:cpu1start_addr
movt r2, #:upper16:cpu1start_addr
/* The socfpga VT cannot handle a 0xC0000000 page offset when loading
the cpu1start_addr, we bit clear it. Tested on HW and VT. */
bic r2, r2, #0x40000000
ldr r0, [r2]
ldr r1, [r0]
bx r1
/* CPU1 will always fetch from 0x0 when it is brought out of reset.
* Thus, we can just subtract the PAGE_OFFSET to get the physical
* address of &cpu1start_addr. This would not work for platforms
* where the physical memory does not start at 0x0.
*/
adr r0, 1f
ldmia r0, {r1, r2}
sub r2, r2, #PAGE_OFFSET
ldr r3, [r2]
ldr r4, [r3]
bx r4
.align
1: .long .
.long socfpga_cpu1start_addr
ENTRY(secondary_trampoline_end)
ENTRY(socfpga_secondary_startup)

4
arch/arm/mach-socfpga/platsmp.c
View File

@ -33,11 +33,11 @@ static int socfpga_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
int trampoline_size = &secondary_trampoline_end - &secondary_trampoline;
if (cpu1start_addr) {
if (socfpga_cpu1start_addr) {
memcpy(phys_to_virt(0), &secondary_trampoline, trampoline_size);
__raw_writel(virt_to_phys(socfpga_secondary_startup),
(sys_manager_base_addr + (cpu1start_addr & 0x000000ff)));
(sys_manager_base_addr + (socfpga_cpu1start_addr & 0x000000ff)));
flush_cache_all();
smp_wmb();

4
arch/arm/mach-socfpga/socfpga.c
View File

@ -29,7 +29,7 @@
void __iomem *socfpga_scu_base_addr = ((void __iomem *)(SOCFPGA_SCU_VIRT_BASE));
void __iomem *sys_manager_base_addr;
void __iomem *rst_manager_base_addr;
unsigned long cpu1start_addr;
unsigned long socfpga_cpu1start_addr;
static struct map_desc scu_io_desc __initdata = {
.virtual = SOCFPGA_SCU_VIRT_BASE,
@ -70,7 +70,7 @@ void __init socfpga_sysmgr_init(void)
np = of_find_compatible_node(NULL, NULL, "altr,sys-mgr");
if (of_property_read_u32(np, "cpu1-start-addr",
(u32 *) &cpu1start_addr))
(u32 *) &socfpga_cpu1start_addr))
pr_err("SMP: Need cpu1-start-addr in device tree.\n");
sys_manager_base_addr = of_iomap(np, 0);