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mmc: sdhci-pci-o2micro: Add SeaBird SeaEagle SD3 support 

Add O2Micro/BayHubTech chip 8520 subversion B1 SD3.0 support.
Add O2Micro/BayHubTech chip 8620 and 8621 SD3.0 support
Enable Led function of 8520 chip.

Signed-off-by: Peter Guo <peter.guo@bayhubtech.com>
Signed-off-by: Adam Lee <adam.lee@canonical.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
This commit is contained in:
Peter Guo 2014-05-05 12:50:28 +02:00 committed by Chris Ball
parent ee526d515a
commit 706adf6bc3
2 changed files with 80 additions and 1 deletions
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78
drivers/mmc/host/sdhci-pci-o2micro.c
View File

@ -21,6 +21,45 @@
#include "sdhci-pci.h"
#include "sdhci-pci-o2micro.h"
static void o2_pci_set_baseclk(struct sdhci_pci_chip *chip, u32 value)
{
u32 scratch_32;
pci_read_config_dword(chip->pdev,
O2_SD_PLL_SETTING, &scratch_32);
scratch_32 &= 0x0000FFFF;
scratch_32 |= value;
pci_write_config_dword(chip->pdev,
O2_SD_PLL_SETTING, scratch_32);
}
static void o2_pci_led_enable(struct sdhci_pci_chip *chip)
{
int ret;
u32 scratch_32;
/* Set led of SD host function enable */
ret = pci_read_config_dword(chip->pdev,
O2_SD_FUNC_REG0, &scratch_32);
if (ret)
return;
scratch_32 &= ~O2_SD_FREG0_LEDOFF;
pci_write_config_dword(chip->pdev,
O2_SD_FUNC_REG0, scratch_32);
ret = pci_read_config_dword(chip->pdev,
O2_SD_TEST_REG, &scratch_32);
if (ret)
return;
scratch_32 |= O2_SD_LED_ENABLE;
pci_write_config_dword(chip->pdev,
O2_SD_TEST_REG, scratch_32);
}
void sdhci_pci_o2_fujin2_pci_init(struct sdhci_pci_chip *chip)
{
u32 scratch_32;
@ -216,6 +255,40 @@ int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
scratch &= 0x7f;
pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
/* DevId=8520 subId= 0x11 or 0x12 Type Chip support */
if (chip->pdev->device == PCI_DEVICE_ID_O2_FUJIN2) {
ret = pci_read_config_dword(chip->pdev,
O2_SD_FUNC_REG0,
&scratch_32);
scratch_32 = ((scratch_32 & 0xFF000000) >> 24);
/* Check Whether subId is 0x11 or 0x12 */
if ((scratch_32 == 0x11) || (scratch_32 == 0x12)) {
scratch_32 = 0x2c280000;
/* Set Base Clock to 208MZ */
o2_pci_set_baseclk(chip, scratch_32);
ret = pci_read_config_dword(chip->pdev,
O2_SD_FUNC_REG4,
&scratch_32);
/* Enable Base Clk setting change */
scratch_32 |= O2_SD_FREG4_ENABLE_CLK_SET;
pci_write_config_dword(chip->pdev,
O2_SD_FUNC_REG4,
scratch_32);
/* Set Tuning Window to 4 */
pci_write_config_byte(chip->pdev,
O2_SD_TUNING_CTRL, 0x44);
break;
}
}
/* Enable 8520 led function */
o2_pci_led_enable(chip);
/* Set timeout CLK */
ret = pci_read_config_dword(chip->pdev,
O2_SD_CLK_SETTING, &scratch_32);
@ -276,7 +349,7 @@ int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
ret = pci_read_config_dword(chip->pdev,
O2_SD_FUNC_REG0, &scratch_32);
O2_SD_PLL_SETTING, &scratch_32);
if ((scratch_32 & 0xff000000) == 0x01000000) {
scratch_32 &= 0x0000FFFF;
@ -299,6 +372,9 @@ int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
O2_SD_FUNC_REG4, scratch_32);
}
/* Set Tuning Windows to 5 */
pci_write_config_byte(chip->pdev,
O2_SD_TUNING_CTRL, 0x55);
/* Lock WP */
ret = pci_read_config_byte(chip->pdev,
O2_SD_LOCK_WP, &scratch);

3
drivers/mmc/host/sdhci-pci-o2micro.h
View File

@ -57,6 +57,9 @@
#define O2_SD_UHS2_L1_CTRL 0x35C
#define O2_SD_FUNC_REG3 0x3E0
#define O2_SD_FUNC_REG4 0x3E4
#define O2_SD_LED_ENABLE BIT(6)
#define O2_SD_FREG0_LEDOFF BIT(13)
#define O2_SD_FREG4_ENABLE_CLK_SET BIT(22)
#define O2_SD_VENDOR_SETTING 0x110
#define O2_SD_VENDOR_SETTING2 0x1C8