[PATCH v5 1/9] mmc: sdhci-st: Add macros for register offsets and bitfields for mmcss glue regs

Peter Griffin
2015-04-10T09:40:49Z

The stih407 family SoC's have additional glue registers in the flashSS which
are used to configure the Arasan controller.

This patch adds macros for the register offsets and bitfields which will be
used by subsequent patches to support stih407 family SoC's.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
---
drivers/mmc/host/sdhci-st.c | 91 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 91 insertions(+)

diff --git a/drivers/mmc/host/sdhci-st.c b/drivers/mmc/host/sdhci-st.c
index 594a4ef..a80de93 100644
--- a/drivers/mmc/host/sdhci-st.c
+++ b/drivers/mmc/host/sdhci-st.c
@@ -26,6 +26,97 @@

#include "sdhci-pltfm.h"

+/* MMCSS glue logic to setup the HC on some ST SoCs (e.g. STiH407 family) */
+
+#define ST_MMC_CCONFIG_REG_1 0x400
+#define ST_MMC_CCONFIG_TIMEOUT_CLK_UNIT BIT(24)
+#define ST_MMC_CCONFIG_TIMEOUT_CLK_FREQ BIT(12)
+#define ST_MMC_CCONFIG_TUNING_COUNT_DEFAULT BIT(8)
+#define ST_MMC_CCONFIG_ASYNC_WAKEUP BIT(0)
+#define ST_MMC_CCONFIG_1_DEFAULT \
+ ((ST_MMC_CCONFIG_TIMEOUT_CLK_UNIT) | \
+ (ST_MMC_CCONFIG_TIMEOUT_CLK_FREQ) | \
+ (ST_MMC_CCONFIG_TUNING_COUNT_DEFAULT))
+
+#define ST_MMC_CCONFIG_REG_2 0x404
+#define ST_MMC_CCONFIG_HIGH_SPEED BIT(28)
+#define ST_MMC_CCONFIG_ADMA2 BIT(24)
+#define ST_MMC_CCONFIG_8BIT BIT(20)
+#define ST_MMC_CCONFIG_MAX_BLK_LEN 16
+#define MAX_BLK_LEN_1024 1
+#define MAX_BLK_LEN_2048 2
+#define BASE_CLK_FREQ_200 0xc8
+#define BASE_CLK_FREQ_100 0x64
+#define BASE_CLK_FREQ_50 0x32
+#define ST_MMC_CCONFIG_2_DEFAULT \
+ (ST_MMC_CCONFIG_HIGH_SPEED | ST_MMC_CCONFIG_ADMA2 | \
+ ST_MMC_CCONFIG_8BIT | \
+ (MAX_BLK_LEN_1024 << ST_MMC_CCONFIG_MAX_BLK_LEN))
+
+#define ST_MMC_CCONFIG_REG_3 0x408
+#define ST_MMC_CCONFIG_EMMC_SLOT_TYPE BIT(28)
+#define ST_MMC_CCONFIG_64BIT BIT(24)
+#define ST_MMC_CCONFIG_ASYNCH_INTR_SUPPORT BIT(20)
+#define ST_MMC_CCONFIG_1P8_VOLT BIT(16)
+#define ST_MMC_CCONFIG_3P0_VOLT BIT(12)
+#define ST_MMC_CCONFIG_3P3_VOLT BIT(8)
+#define ST_MMC_CCONFIG_SUSP_RES_SUPPORT BIT(4)
+#define ST_MMC_CCONFIG_SDMA BIT(0)
+#define ST_MMC_CCONFIG_3_DEFAULT \
+ (ST_MMC_CCONFIG_ASYNCH_INTR_SUPPORT | \
+ ST_MMC_CCONFIG_3P3_VOLT | \
+ ST_MMC_CCONFIG_SUSP_RES_SUPPORT | \
+ ST_MMC_CCONFIG_SDMA)
+
+#define ST_MMC_CCONFIG_REG_4 0x40c
+#define ST_MMC_CCONFIG_D_DRIVER BIT(20)
+#define ST_MMC_CCONFIG_C_DRIVER BIT(16)
+#define ST_MMC_CCONFIG_A_DRIVER BIT(12)
+#define ST_MMC_CCONFIG_DDR50 BIT(8)
+#define ST_MMC_CCONFIG_SDR104 BIT(4)
+#define ST_MMC_CCONFIG_SDR50 BIT(0)
+#define ST_MMC_CCONFIG_4_DEFAULT 0
+
+#define ST_MMC_CCONFIG_REG_5 0x410
+#define ST_MMC_CCONFIG_TUNING_FOR_SDR50 BIT(8)
+#define RETUNING_TIMER_CNT_MAX 0xf
+#define ST_MMC_CCONFIG_5_DEFAULT 0
+
+/* I/O configuration for Arasan IP */
+#define ST_MMC_GP_OUTPUT 0x450
+#define ST_MMC_GP_OUTPUT_CD BIT(12)
+
+#define ST_MMC_STATUS_R 0x460
+
+#define ST_TOP_MMC_DLY_FIX_OFF(x) (x - 0x8)
+
+/* TOP config registers to manage static and dynamic delay */
+#define ST_TOP_MMC_TX_CLK_DLY ST_TOP_MMC_DLY_FIX_OFF(0x8)
+#define ST_TOP_MMC_RX_CLK_DLY ST_TOP_MMC_DLY_FIX_OFF(0xc)
+/* MMC delay control register */
+#define ST_TOP_MMC_DLY_CTRL ST_TOP_MMC_DLY_FIX_OFF(0x18)
+#define ST_TOP_MMC_DLY_CTRL_DLL_BYPASS_CMD BIT(0)
+#define ST_TOP_MMC_DLY_CTRL_DLL_BYPASS_PH_SEL BIT(1)
+#define ST_TOP_MMC_DLY_CTRL_TX_DLL_ENABLE BIT(8)
+#define ST_TOP_MMC_DLY_CTRL_RX_DLL_ENABLE BIT(9)
+#define ST_TOP_MMC_DLY_CTRL_ATUNE_NOT_CFG_DLY BIT(10)
+#define ST_TOP_MMC_START_DLL_LOCK BIT(11)
+
+/* register to provide the phase-shift value for DLL */
+#define ST_TOP_MMC_TX_DLL_STEP_DLY ST_TOP_MMC_DLY_FIX_OFF(0x1c)
+#define ST_TOP_MMC_RX_DLL_STEP_DLY ST_TOP_MMC_DLY_FIX_OFF(0x20)
+#define ST_TOP_MMC_RX_CMD_STEP_DLY ST_TOP_MMC_DLY_FIX_OFF(0x24)
+
+/* phase shift delay on the tx clk 2.188ns */
+#define ST_TOP_MMC_TX_DLL_STEP_DLY_VALID 0x6
+
+#define ST_TOP_MMC_DLY_MAX 0xf
+
+#define ST_TOP_MMC_DYN_DLY_CONF \
+ (ST_TOP_MMC_DLY_CTRL_TX_DLL_ENABLE | \
+ ST_TOP_MMC_DLY_CTRL_ATUNE_NOT_CFG_DLY | \
+ ST_TOP_MMC_START_DLL_LOCK)
+
static u32 sdhci_st_readl(struct sdhci_host *host, int reg)
{
u32 ret;
--
1.9.1