Unable to change wifi channel: No channel selection box in Luci

I changed the wifi cards in my router. One of these new cards is Atheros AR9285 (single band, 802.11b/g/n). There's a weird problem with this card: There's no selection of wifi channel in Luci. See the screenshot.

Is this normal?

wifi-no-channel

More info:

lspci -v
03:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
        Subsystem: Askey Computer Corp. Device 7167
        Flags: bus master, fast devsel, latency 0, IRQ 80
        Memory at f8200000 (64-bit, non-prefetchable) [size=64K]
        Capabilities: [40] Power Management version 3
        Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit-
        Capabilities: [60] Express Legacy Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [140] Virtual Channel
        Capabilities: [160] Device Serial Number 00-15-17-ff-ff-24-14-12
        Capabilities: [170] Power Budgeting <?>
        Kernel driver in use: ath9k

iw list
Wiphy phy1
        wiphy index: 1
        max # scan SSIDs: 4
        max scan IEs length: 2257 bytes
        max # sched scan SSIDs: 0
        max # match sets: 0
        Retry short limit: 7
        Retry long limit: 4
        Coverage class: 1 (up to 450m)
        Device supports AP-side u-APSD.
        Device supports T-DLS.
        Available Antennas: TX 0x1 RX 0x3
        Configured Antennas: TX 0x1 RX 0x3
        Supported interface modes:
                 * IBSS
                 * managed
                 * AP
                 * AP/VLAN
                 * monitor
                 * P2P-client
                 * P2P-GO
                 * outside context of a BSS
        Band 1:
                Capabilities: 0x11ce
                        HT20/HT40
                        SM Power Save disabled
                        RX HT40 SGI
                        TX STBC
                        RX STBC 1-stream
                        Max AMSDU length: 3839 bytes
                        DSSS/CCK HT40
                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
                Minimum RX AMPDU time spacing: 8 usec (0x06)
                HT TX/RX MCS rate indexes supported: 0-7
                Frequencies:
                        * 2412 MHz [1] (17.0 dBm)
                        * 2417 MHz [2] (17.0 dBm)
                        * 2422 MHz [3] (17.0 dBm)
                        * 2427 MHz [4] (17.0 dBm)
                        * 2432 MHz [5] (17.0 dBm)
                        * 2437 MHz [6] (17.0 dBm)
                        * 2442 MHz [7] (17.0 dBm)
                        * 2447 MHz [8] (17.0 dBm)
                        * 2452 MHz [9] (17.0 dBm)
                        * 2457 MHz [10] (17.0 dBm)
                        * 2462 MHz [11] (17.0 dBm)
                        * 2467 MHz [12] (17.0 dBm)
                        * 2472 MHz [13] (17.0 dBm)
                        * 2484 MHz [14] (disabled)
        valid interface combinations:
                 * #{ managed } <= 2048, #{ AP } <= 8, #{ P2P-client, P2P-GO } <= 1, #{ IBSS } <= 1,
                   total <= 2048, #channels <= 1, STA/AP BI must match, radar detect widths: { 20 MHz (no HT), 20 MHz, 40 MHz }

        HT Capability overrides:
                 * MCS: ff ff ff ff ff ff ff ff ff ff
                 * maximum A-MSDU length
                 * supported channel width
                 * short GI for 40 MHz
                 * max A-MPDU length exponent
                 * min MPDU start spacing
        max # scan plans: 1
        max scan plan interval: -1
        max scan plan iterations: 0
        Supported extended features:
                * [ RRM ]: RRM
                * [ FILS_STA ]: STA FILS (Fast Initial Link Setup)
                * [ CQM_RSSI_LIST ]: multiple CQM_RSSI_THOLD records
                * [ CONTROL_PORT_OVER_NL80211 ]: control port over nl80211
                * [ TXQS ]: FQ-CoDel-enabled intermediate TXQs
                * [ SCAN_RANDOM_SN ]: use random sequence numbers in scans
                * [ SCAN_MIN_PREQ_CONTENT ]: use probe request with only rate IEs in scans
                * [ CAN_REPLACE_PTK0 ]: can safely replace PTK 0 when rekeying
                * [ AIRTIME_FAIRNESS ]: airtime fairness scheduling
                * [ CONTROL_PORT_NO_PREAUTH ]: disable pre-auth over nl80211 control port support
                * [ DEL_IBSS_STA ]: deletion of IBSS station support
                * [ MULTICAST_REGISTRATIONS ]: mgmt frame registration for multicast
                * [ SCAN_FREQ_KHZ ]: scan on kHz frequency support
                * [ CONTROL_PORT_OVER_NL80211_TX_STATUS ]: tx status for nl80211 control port support

Thanks.